81.
Kooiker, Klaas
Designed for Waves Journal Article
In: MARIN Report, no. 109, pp. 22, 2013.
@article{Kooiker2013,
title = {Designed for Waves},
author = {Klaas Kooiker},
url = {http://www.marin.nl/extra/marin-bladermodules/html/109/#22},
year = {2013},
date = {2013-08-01},
journal = {MARIN Report},
number = {109},
pages = {22},
abstract = {Platform Supply Vessels are the ultimate challenge when it comes to ship design. While calm water performance is important, for these ships it is merely a reference value. Harsh weather conditions and the corresponding sea states are the playground of the PSV and the challenging circumstances dictate fuel consumption.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Platform Supply Vessels are the ultimate challenge when it comes to ship design. While calm water performance is important, for these ships it is merely a reference value. Harsh weather conditions and the corresponding sea states are the playground of the PSV and the challenging circumstances dictate fuel consumption.
82.
Dang, Jie; Liu, Runwen; Pouw, Christiaan
Waterjet System Performance and Cavitation Test Procedures Conference
Proceedings of third International Symposium on Marine Propulsors (smp’13), Tasmania, Australia, SMP'13 2013.
@conference{Dang2013b,
title = {Waterjet System Performance and Cavitation Test Procedures},
author = {Jie Dang and Runwen Liu and Christiaan Pouw},
url = {http://www.marin.nl/web/Publications/Papers/Waterjet-System-Performance-and-Cavitation-Test-Procedures.htm
http://www.marinepropulsors.com/proceedings/2013/2B.1.pdf},
year = {2013},
date = {2013-05-05},
booktitle = {Proceedings of third International Symposium on Marine Propulsors (smp’13), Tasmania, Australia},
organization = {SMP'13},
abstract = {Different from marine propeller designs, which undergo standard stock and design propeller test programmes with detailed assessments of the final design (for the overall propulsive efficiency, the cavitation performance and the pressure fluctuations, etc.), waterjet systems of a final design are seldom tested for their system characteristics, the intake loss and the cavitation performance. It could be both due to economical reasons that waterjet system tests are relatively expensive. It could also be due to technical reasons, such as, that the operating point of a waterjet system does not vary too much for different operational conditions. This means that it performs also very well for all other operational (off-design) conditions once a waterjet system is well-designed for its design condition. However in practice, mismatching of power absorption and shaft rotational rate, and cavitation erosion, are now and then found after the sea trials of the waterjet propelled ships. Remedial action is needed then. In some cases, removing cavitation erosion can be rather difficult and simple modifications may not solve the problem.
In order to prevent those kinds of problems from the early design stage, waterjet system performance and cavitation tests of the final design are strongly recommended. Taking example of a Fast River Passenger Ferry, test procedures are discussed in detail in the present paper. The scale effects and the extrapolation method are also addressed. The results provide a good data set for CFD validation too. },
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Different from marine propeller designs, which undergo standard stock and design propeller test programmes with detailed assessments of the final design (for the overall propulsive efficiency, the cavitation performance and the pressure fluctuations, etc.), waterjet systems of a final design are seldom tested for their system characteristics, the intake loss and the cavitation performance. It could be both due to economical reasons that waterjet system tests are relatively expensive. It could also be due to technical reasons, such as, that the operating point of a waterjet system does not vary too much for different operational conditions. This means that it performs also very well for all other operational (off-design) conditions once a waterjet system is well-designed for its design condition. However in practice, mismatching of power absorption and shaft rotational rate, and cavitation erosion, are now and then found after the sea trials of the waterjet propelled ships. Remedial action is needed then. In some cases, removing cavitation erosion can be rather difficult and simple modifications may not solve the problem.
In order to prevent those kinds of problems from the early design stage, waterjet system performance and cavitation tests of the final design are strongly recommended. Taking example of a Fast River Passenger Ferry, test procedures are discussed in detail in the present paper. The scale effects and the extrapolation method are also addressed. The results provide a good data set for CFD validation too.
In order to prevent those kinds of problems from the early design stage, waterjet system performance and cavitation tests of the final design are strongly recommended. Taking example of a Fast River Passenger Ferry, test procedures are discussed in detail in the present paper. The scale effects and the extrapolation method are also addressed. The results provide a good data set for CFD validation too.
83.
te Winkel, Ellen
MARIN opens world’s first Depressurised Wave Basin Journal Article
In: MARIN Report, no. 105, pp. 9, 2013.
@article{Winkel2013,
title = {MARIN opens world’s first Depressurised Wave Basin},
author = {Ellen te Winkel},
url = {http://www.marin.nl/web/Publications/Publication-items/MARIN-opens-worlds-first-Depressurised-Wave-Basin.htm},
year = {2013},
date = {2013-04-01},
journal = {MARIN Report},
number = {105},
pages = {9},
abstract = {MARIN’s unique Depressurised Wave Basin (DWB) was officially inaugurated on March 19 by Maxime Verhagen, the Dutch Minister of Economic Affairs, Agriculture and Innovation.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
MARIN’s unique Depressurised Wave Basin (DWB) was officially inaugurated on March 19 by Maxime Verhagen, the Dutch Minister of Economic Affairs, Agriculture and Innovation.
84.
van den Boom, Henk; Huisman, Rene; Mennen, Frits
New Guidelines for Speed/ Power Trials Journal Article
In: SWZ Maritime, pp. 19-22, 2013.
@article{Boom2013,
title = {New Guidelines for Speed/ Power Trials},
author = {Henk van den Boom and Rene Huisman and Frits Mennen },
url = {http://www.marin.nl/web/JIPs-Networks/Public/STA.htm
http://www.staimo.com/},
year = {2013},
date = {2013-01-30},
journal = {SWZ Maritime},
pages = {19-22},
abstract = {The speed/power characteristics of ships have always been at the core of ship design. To prove contractually agreed values, speed trials are conducted by the yard prior to the ship's delivery to the owner. In the past, the vessel's schedule integrity was often the most important factor for the speed requirement. Today, owners and operators are keen to reduce fuel consumption to decrease operational costs. So far, shipyards have used a variety of methods for conducting and analysing speed/power trials. With the assistance of the Sea Trial Analysis-Joint Industry Project (STA-JIP) and ITTC, the new IMO EEDI rules to reduce C02 emissions have resulted in clear, pragmatic and transparent guidelines for the reliable speed/power assessment of ships worldwide. },
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The speed/power characteristics of ships have always been at the core of ship design. To prove contractually agreed values, speed trials are conducted by the yard prior to the ship's delivery to the owner. In the past, the vessel's schedule integrity was often the most important factor for the speed requirement. Today, owners and operators are keen to reduce fuel consumption to decrease operational costs. So far, shipyards have used a variety of methods for conducting and analysing speed/power trials. With the assistance of the Sea Trial Analysis-Joint Industry Project (STA-JIP) and ITTC, the new IMO EEDI rules to reduce C02 emissions have resulted in clear, pragmatic and transparent guidelines for the reliable speed/power assessment of ships worldwide.
85.
Nieuwenhuis, Jan Jaap; Duursema, Wieger; Verhulst, Michiel
Proposed changes to EEDI framework for small general cargo ships Journal Article
In: MARIN Report, no. 107, pp. 20-21, 2013.
@article{Verhulst2013,
title = {Proposed changes to EEDI framework for small general cargo ships},
author = {Jan Jaap Nieuwenhuis and Wieger Duursema and Michiel Verhulst},
url = {http://www.marin.nl/web/Publications/Publication-items/Proposed-changes-to-EEDI-framework-for-small-general-cargo-ships.htm},
year = {2013},
date = {2013-01-01},
journal = {MARIN Report},
number = {107},
pages = {20-21},
abstract = {The Centre for Maritime Technology and Innovation, part of the Holland Shipbuilding Association and the Royal Association of Netherlands Shipowners, asked MARIN and Conoship to investigate the cause of the large scatter in the Energy Efficiency Design Index (EEDI) values of small general cargo ships. Report explains.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The Centre for Maritime Technology and Innovation, part of the Holland Shipbuilding Association and the Royal Association of Netherlands Shipowners, asked MARIN and Conoship to investigate the cause of the large scatter in the Energy Efficiency Design Index (EEDI) values of small general cargo ships. Report explains.
86.
Dang, Jie; Brouwer, Joris; Bosman, Rene; Pouw, Christiaan
Quasi-Steady Two-Quadrant Open Water Tests for the Wageningen Propeller C- and D-Series Conference
29th Symposium on Naval Hydrodynamics, Gothenburg, Sweden , Symposium on Naval Hydrodynamics 2012.
@conference{Dang2012,
title = {Quasi-Steady Two-Quadrant Open Water Tests for the Wageningen Propeller C- and D-Series},
author = {Jie Dang and Joris Brouwer and Rene Bosman and Christiaan Pouw },
url = {http://www.marin.nl/web/Publications/Papers/QuasiSteady-TwoQuadrant-Open-Water-Tests-for-the-Wageningen-Propeller-C-and-DSeries.htm},
year = {2012},
date = {2012-08-26},
booktitle = {29th Symposium on Naval Hydrodynamics, Gothenburg, Sweden },
organization = {Symposium on Naval Hydrodynamics},
abstract = {MARIN has recently started a Joint Industry Project (JIP) on controllable pitch propeller (CPP) series called the Wageningen Propeller C- and D-series, after the successful development of the famous Wageningen B-series which are used by designers and engineers worldwide.
The B-series comprise the open water characteristics of conventional fixed pitch propellers (FPPs) designed for merchant ships with various numbers of blades and blade area ratios at different pitch. For several of these propellers, also the four-quadrant characteristics were published by MARIN in the sixties and seventies of the last century.
Today many ships are equipped with CPPs. Also used widely are the ducted CPPs, both for ships and offshore structures. The off-design performance of the CPPs is not only of importance for ships’ powering performance, but also for e.g. dynamic positioning and manoeuvring of those vessels. Due to a lack of systematic information for the CPPs in such cases, the B-series data are often used instead, both for the estimation in an early design stage and also as the final data delivered for specific new CPP designs, simply because there is no other systematic data available rather than the B-series data. However, the characteristics of CPPs differ substantially from those of FPPs. There is a high demand for developing CPP series with full off-design information - the complete two-quadrant open water characteristics at all possible pitch settings.
In order to reduce the cost, a quasi-steady propeller open water test technique has been developed and thoroughly studied under support of this JIP, which reduced the tank test time by a factor of 8 to 10. This method ensures the affordability of the tests for the C- and D-series, and therefore the whole JIP.
In addition to the propeller thrust and torque, the propeller blade spindle torque is also provided as systematic data in propeller series for the first time. },
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
MARIN has recently started a Joint Industry Project (JIP) on controllable pitch propeller (CPP) series called the Wageningen Propeller C- and D-series, after the successful development of the famous Wageningen B-series which are used by designers and engineers worldwide.
The B-series comprise the open water characteristics of conventional fixed pitch propellers (FPPs) designed for merchant ships with various numbers of blades and blade area ratios at different pitch. For several of these propellers, also the four-quadrant characteristics were published by MARIN in the sixties and seventies of the last century.
Today many ships are equipped with CPPs. Also used widely are the ducted CPPs, both for ships and offshore structures. The off-design performance of the CPPs is not only of importance for ships’ powering performance, but also for e.g. dynamic positioning and manoeuvring of those vessels. Due to a lack of systematic information for the CPPs in such cases, the B-series data are often used instead, both for the estimation in an early design stage and also as the final data delivered for specific new CPP designs, simply because there is no other systematic data available rather than the B-series data. However, the characteristics of CPPs differ substantially from those of FPPs. There is a high demand for developing CPP series with full off-design information - the complete two-quadrant open water characteristics at all possible pitch settings.
In order to reduce the cost, a quasi-steady propeller open water test technique has been developed and thoroughly studied under support of this JIP, which reduced the tank test time by a factor of 8 to 10. This method ensures the affordability of the tests for the C- and D-series, and therefore the whole JIP.
In addition to the propeller thrust and torque, the propeller blade spindle torque is also provided as systematic data in propeller series for the first time.
The B-series comprise the open water characteristics of conventional fixed pitch propellers (FPPs) designed for merchant ships with various numbers of blades and blade area ratios at different pitch. For several of these propellers, also the four-quadrant characteristics were published by MARIN in the sixties and seventies of the last century.
Today many ships are equipped with CPPs. Also used widely are the ducted CPPs, both for ships and offshore structures. The off-design performance of the CPPs is not only of importance for ships’ powering performance, but also for e.g. dynamic positioning and manoeuvring of those vessels. Due to a lack of systematic information for the CPPs in such cases, the B-series data are often used instead, both for the estimation in an early design stage and also as the final data delivered for specific new CPP designs, simply because there is no other systematic data available rather than the B-series data. However, the characteristics of CPPs differ substantially from those of FPPs. There is a high demand for developing CPP series with full off-design information - the complete two-quadrant open water characteristics at all possible pitch settings.
In order to reduce the cost, a quasi-steady propeller open water test technique has been developed and thoroughly studied under support of this JIP, which reduced the tank test time by a factor of 8 to 10. This method ensures the affordability of the tests for the C- and D-series, and therefore the whole JIP.
In addition to the propeller thrust and torque, the propeller blade spindle torque is also provided as systematic data in propeller series for the first time.
87.
Hooijmans, Patrick
Setting new standards in container ship design Journal Article
In: MARIN Report, no. 106, pp. 14, 2012.
@article{Hooijmans2012b,
title = {Setting new standards in container ship design},
author = {Patrick Hooijmans},
url = {http://www.marin.nl/web/Publications/Publication-items/Setting-new-standards-in-container-ship-design.htm},
year = {2012},
date = {2012-08-01},
journal = {MARIN Report},
number = {106},
pages = {14},
abstract = {Seaspan Saver, a 10,000 TEU container vessel is setting new standards in container ship design. MARIN is proud to have played a role in this pioneering design, which is highlighted here.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Seaspan Saver, a 10,000 TEU container vessel is setting new standards in container ship design. MARIN is proud to have played a role in this pioneering design, which is highlighted here.
88.
Grin, Rob
On The Prediction Of Wave Added Resistance Conference
11th International Marine Design Conference (IMDC), Glasgow, UK, 2012.
@conference{Grin2012,
title = {On The Prediction Of Wave Added Resistance},
author = {Rob Grin},
url = {http://www.marin.nl/web/News/News-items/On-The-Prediction-Of-Wave-Added-Resistance.htm
},
year = {2012},
date = {2012-06-11},
booktitle = {11th International Marine Design Conference (IMDC), Glasgow, UK},
abstract = {There is continuous research on analytical, numerical and (semi-)empirical methods to predict wave added resistance. Most of this research focuses on a particular area, like motion induced wave added resistance, wave added resistance in short waves or is limited to head seas only. The practical application of most methods is therefore often limited. Moreover, most methods require detailed information on hull lines and results are rather sensitive to the discretisation of those hull lines. Since 2006, MARIN has been investigating the feasibility of empirical methods which do not have those limitations. They only require the main particulars to predict wave added resistance. Within the Sea Trial Analysis joint industry project (STA-JIP), a method was developed for the correction of wave added resistance in head seas covering both the motion induced and the wave reflection induced component. This method was further refined and extended to all wave directions within the service performance analysis JIP (SPA-JIP) in 2008.
This paper presents the results of the comparison between the prediction methods and model tests for almost 50 different ships, comprising more than 1500 tests in regular and irregular seas.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
There is continuous research on analytical, numerical and (semi-)empirical methods to predict wave added resistance. Most of this research focuses on a particular area, like motion induced wave added resistance, wave added resistance in short waves or is limited to head seas only. The practical application of most methods is therefore often limited. Moreover, most methods require detailed information on hull lines and results are rather sensitive to the discretisation of those hull lines. Since 2006, MARIN has been investigating the feasibility of empirical methods which do not have those limitations. They only require the main particulars to predict wave added resistance. Within the Sea Trial Analysis joint industry project (STA-JIP), a method was developed for the correction of wave added resistance in head seas covering both the motion induced and the wave reflection induced component. This method was further refined and extended to all wave directions within the service performance analysis JIP (SPA-JIP) in 2008.
This paper presents the results of the comparison between the prediction methods and model tests for almost 50 different ships, comprising more than 1500 tests in regular and irregular seas.
This paper presents the results of the comparison between the prediction methods and model tests for almost 50 different ships, comprising more than 1500 tests in regular and irregular seas.
89.
Dang, Jie
Proceedings of the 31st International Conference on Ocean, Offshore and Arctic Engineering, Rio de Janeiro, Brazil , no. OMAE2012-83053 , ASME - OMAE2012 2012.
@conference{Dang2012b,
title = {An Exploratory Study on the Working Principles of Energy Saving Devices (ESDS) - PIV, CFD Investigations and ESD Design Guidelines},
author = {Jie Dang},
url = {http://www.marin.nl/web/Publications/Papers/An-Exploratory-Study-on-the-Working-Principles-of-Energy-Saving-Devices-ESDS-PIV-CFD-Investigations-and-ESD-Design-Guidelines-1.htm},
year = {2012},
date = {2012-06-01},
booktitle = {Proceedings of the 31st International Conference on Ocean, Offshore and Arctic Engineering, Rio de Janeiro, Brazil },
number = {OMAE2012-83053 },
organization = {ASME - OMAE2012},
abstract = {The Maritime Research Institute Netherlands (MARIN) has recently started a Joint Industry Project (JIP) called ESD-JILI, investigating the working principles of energy saving devices (ESDs). Within the framework of this JIP, three ESDs have been selected and thoroughly investigated. They are a Pre-Duct with an inner Stator (PDS), a Pre-Swirl Stator (PSS) with asymmetric blade design and Hub Fins (HFs). The investigations have been carried out by using dedicated force and moment sensors to measure all the components of the ESDs independently during the propulsion tests, by using Particle Image Velocimetry (PIV) to measure the flow before, in-plane and behind the propeller and the ESDs, and by using Smart Ship Model technology (Wijngaarden 2011) to simulate the full-scale wake field during the model tests to gain insights on scale effects of the ESDs. At the same time, computational fluid dynamics (CFD) calculations are also carried out in order to further deepen the understanding of the working principles of the selected ESDs, and to assist the ESDs designs under certain guidelines. Some of the results of the study have been published to the Greenship’2011 Conference (Dang et al 2011). The flow details around the propulsion system with the PDS, which were obtained by both PIV measurements and CFD calculations, and the energy balance of the ship-propulsion system with a PDS are further investigated and reported here. Based on the results of the studies, the principle guidelines for ESD designs for single screw merchant ships have been proposed. },
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
The Maritime Research Institute Netherlands (MARIN) has recently started a Joint Industry Project (JIP) called ESD-JILI, investigating the working principles of energy saving devices (ESDs). Within the framework of this JIP, three ESDs have been selected and thoroughly investigated. They are a Pre-Duct with an inner Stator (PDS), a Pre-Swirl Stator (PSS) with asymmetric blade design and Hub Fins (HFs). The investigations have been carried out by using dedicated force and moment sensors to measure all the components of the ESDs independently during the propulsion tests, by using Particle Image Velocimetry (PIV) to measure the flow before, in-plane and behind the propeller and the ESDs, and by using Smart Ship Model technology (Wijngaarden 2011) to simulate the full-scale wake field during the model tests to gain insights on scale effects of the ESDs. At the same time, computational fluid dynamics (CFD) calculations are also carried out in order to further deepen the understanding of the working principles of the selected ESDs, and to assist the ESDs designs under certain guidelines. Some of the results of the study have been published to the Greenship’2011 Conference (Dang et al 2011). The flow details around the propulsion system with the PDS, which were obtained by both PIV measurements and CFD calculations, and the energy balance of the ship-propulsion system with a PDS are further investigated and reported here. Based on the results of the studies, the principle guidelines for ESD designs for single screw merchant ships have been proposed.
90.
Hooijmans, Patrick; Grin, Rob
Wave added resistance Journal Article
In: MARIN Report, no. 105, pp. 21, 2012.
@article{Hooijmans2012,
title = {Wave added resistance},
author = {Patrick Hooijmans and Rob Grin},
url = {http://www.marin.nl/web/Publications/Publication-items/Wave-added-resistance.htm},
year = {2012},
date = {2012-04-01},
journal = {MARIN Report},
number = {105},
pages = {21},
abstract = {Model tests for the evaluation of ship designs should not only be performed in calm water but also in waves. MARIN’s new Depressurised Wave Basin (DWB) helps unravel some of the mysteries of wave added resistance.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Model tests for the evaluation of ship designs should not only be performed in calm water but also in waves. MARIN’s new Depressurised Wave Basin (DWB) helps unravel some of the mysteries of wave added resistance.
91.
Dallinga, Reint
Prediction of added resistance of ships in waves under further scrutiny Journal Article
In: MARIN Report, no. 104, pp. 12-13, 2011.
@article{Dallinga2011,
title = {Prediction of added resistance of ships in waves under further scrutiny},
author = {Reint Dallinga},
url = {http://www.marin.nl/web/Publications/Publication-items/Prediction-of-added-resistance-of-ships-in-waves-under-further-scrutiny.htm},
year = {2011},
date = {2011-12-01},
journal = {MARIN Report},
number = {104},
pages = {12-13},
institution = {MARIN },
abstract = {MARIN investigates the merits of a Rankine source method in the prediction of added resistance.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
MARIN investigates the merits of a Rankine source method in the prediction of added resistance.
92.
Zondervan, Gert-Jan; Dang, Jie
MARIN spearheads propulsion improvements Journal Article
In: MARIN Report, no. 104, pp. 16-17, 2011.
@article{zondervan2011,
title = {MARIN spearheads propulsion improvements},
author = {Gert-Jan Zondervan and Jie Dang},
url = {http://www.marin.nl/web/Publications/Publication-items/MARIN-spearheads-propulsion-improvements.htm},
year = {2011},
date = {2011-12-01},
journal = {MARIN Report},
number = {104},
pages = {16-17},
abstract = {Fuel saving and emission reduction are motivating factors in the drive to improve marine propulsor technology and in the renewed interest in special devices that improve propulsion. Together with the industry, MARIN is actively investigating their working principles and the critical design aspects, using modern design and analysis tools.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Fuel saving and emission reduction are motivating factors in the drive to improve marine propulsor technology and in the renewed interest in special devices that improve propulsion. Together with the industry, MARIN is actively investigating their working principles and the critical design aspects, using modern design and analysis tools.
93.
Dang, Jie; Chen, Hao; Dong, Guoxiang; van der Ploeg, Auke; Hallmann, Rink; Mauro, Francesco
An Exploratory Study on the Working Principles of Energy Saving Devices (ESDs) Conference
Symposium on Green Ship Technology, Wuxi, China, October 201, Greenship'2011 2011.
@conference{Dang2011,
title = {An Exploratory Study on the Working Principles of Energy Saving Devices (ESDs)},
author = {Jie Dang and Hao Chen and Guoxiang Dong and Auke van der Ploeg and Rink Hallmann and Francesco Mauro},
url = {http://www.marin.nl/web/News/News-items/An-Exploratory-Study-on-the-Working-Principles-of-Energy-Saving-Devices-ESDs.htm},
year = {2011},
date = {2011-10-01},
booktitle = {Symposium on Green Ship Technology, Wuxi, China, October 201},
organization = {Greenship'2011},
abstract = { new Joint Industry Project (JIP) has been initiated recently by MARIN, called ESD-JILI (机理), looking into the working principles and scale effects on Energy Saving Devices (ESDs).
Three ESDs have been chosen for the investigations in the first phase. They were a preduct with a supporting stator in the duct, a pre-swirl stator with asymmetric blade design and Propeller Boss Cap Fins (PBCF). Measurements of forces and moments on all components of the ESDs have been carried out in selfpropulsion model tests with dedicated sensors. Particle Image Velocimetry (PIV) technique has been used in the investigation of the detailed flow around the ESDs. In order to investigate the scale effects in model tests, a fullscale wake field was approximated by a ‘smart ship model’. Computational Fluid Dynamics (CFD) calculations were carried out both for designing the smart ship model and also for the detailed flow around the ESDs. Some findings and fundamental issues on scale-effects of the ESDs are addressed in this paper. },
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
new Joint Industry Project (JIP) has been initiated recently by MARIN, called ESD-JILI (机理), looking into the working principles and scale effects on Energy Saving Devices (ESDs).
Three ESDs have been chosen for the investigations in the first phase. They were a preduct with a supporting stator in the duct, a pre-swirl stator with asymmetric blade design and Propeller Boss Cap Fins (PBCF). Measurements of forces and moments on all components of the ESDs have been carried out in selfpropulsion model tests with dedicated sensors. Particle Image Velocimetry (PIV) technique has been used in the investigation of the detailed flow around the ESDs. In order to investigate the scale effects in model tests, a fullscale wake field was approximated by a ‘smart ship model’. Computational Fluid Dynamics (CFD) calculations were carried out both for designing the smart ship model and also for the detailed flow around the ESDs. Some findings and fundamental issues on scale-effects of the ESDs are addressed in this paper.
Three ESDs have been chosen for the investigations in the first phase. They were a preduct with a supporting stator in the duct, a pre-swirl stator with asymmetric blade design and Propeller Boss Cap Fins (PBCF). Measurements of forces and moments on all components of the ESDs have been carried out in selfpropulsion model tests with dedicated sensors. Particle Image Velocimetry (PIV) technique has been used in the investigation of the detailed flow around the ESDs. In order to investigate the scale effects in model tests, a fullscale wake field was approximated by a ‘smart ship model’. Computational Fluid Dynamics (CFD) calculations were carried out both for designing the smart ship model and also for the detailed flow around the ESDs. Some findings and fundamental issues on scale-effects of the ESDs are addressed in this paper.
94.
Hagesteijn, Gerco; Hooijmans, Patrick
Ship Design for Minimal Fuel Consumption in Everyday Use Conference
Design and Operation of Tankers, Athens, Greece, The Royal Institution of Naval Architects 2011.
@conference{Hagesteijn2011,
title = {Ship Design for Minimal Fuel Consumption in Everyday Use},
author = {Gerco Hagesteijn and Patrick Hooijmans},
url = {http://www.marin.nl/web/Publications/Publication-items/Ship-Design-for-Minimal-Fuel-Consumption-in-Everyday-Use.htm
http://www.rina.org.uk/search_publications.html
},
year = {2011},
date = {2011-06-08},
booktitle = {Design and Operation of Tankers, Athens, Greece},
organization = {The Royal Institution of Naval Architects},
abstract = {Ships are in general designed to first meet their contract speed, which is most times their trial speed. The ship design efforts are dominated by the focus to attain this trial speed. The resulting hull lines design philosophy will most likely not result into the most full efficient design in service conditions. Increasing fuel costs and low freight rates drive the need to design ships for their service conditions. It's operational draughts and added resistance due to waves that should be the key drivers for a successful modern ship design. The last years MARIN has tested and expanded its tools and capacities to support hull form design for minimal fuel consumption in everyday use, minimizing SOx and NOx emissions. Tools suchs as viscous flow calculations in an explorer mode, calculating numerous hull form variations overnight in order to maximize the performance of the vessel, and voyage simulations to determine true service margins are essential when designing a ship.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Ships are in general designed to first meet their contract speed, which is most times their trial speed. The ship design efforts are dominated by the focus to attain this trial speed. The resulting hull lines design philosophy will most likely not result into the most full efficient design in service conditions. Increasing fuel costs and low freight rates drive the need to design ships for their service conditions. It's operational draughts and added resistance due to waves that should be the key drivers for a successful modern ship design. The last years MARIN has tested and expanded its tools and capacities to support hull form design for minimal fuel consumption in everyday use, minimizing SOx and NOx emissions. Tools suchs as viscous flow calculations in an explorer mode, calculating numerous hull form variations overnight in order to maximize the performance of the vessel, and voyage simulations to determine true service margins are essential when designing a ship.
95.
Reint Dallinga, J E Bos
Cruise ship seakeeping and passenger comfort Conference
International Conference On Human Performance at Sea, Glasgow, Scotland, United Kingdom, HPAS 2010.
@conference{Dallinga2010,
title = {Cruise ship seakeeping and passenger comfort},
author = {Reint Dallinga, J E Bos},
url = {http://www.marin.nl/web/Publications/Publication-items/Cruise-ship-seakeeping-and-passenger-comfort.htm},
year = {2010},
date = {2010-06-16},
booktitle = {International Conference On Human Performance at Sea, Glasgow, Scotland, United Kingdom},
organization = {HPAS},
abstract = {In the last decade the design and construction of a substantial volume of large cruise ships has stimulated the evolution of cruise ship design. The MARIN and TNO involvement in these developments, and in particular the increase in size, have lead to new insights in how the ship design governs passenger discomfort.
Our contribution to the conference highlights our experience with the link between passenger comfort and cruise ship design by identifying the particular seakeeping qualities of cruise ships that govern passenger comfort and showing the impact the most important choices in cruise ship design on these governing factors. Attention is paid to the effect of combined motions and roll stabilisation on seasickness, the discomfort introduced by slamming induced whipping and to postural stability.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
In the last decade the design and construction of a substantial volume of large cruise ships has stimulated the evolution of cruise ship design. The MARIN and TNO involvement in these developments, and in particular the increase in size, have lead to new insights in how the ship design governs passenger discomfort.
Our contribution to the conference highlights our experience with the link between passenger comfort and cruise ship design by identifying the particular seakeeping qualities of cruise ships that govern passenger comfort and showing the impact the most important choices in cruise ship design on these governing factors. Attention is paid to the effect of combined motions and roll stabilisation on seasickness, the discomfort introduced by slamming induced whipping and to postural stability.
Our contribution to the conference highlights our experience with the link between passenger comfort and cruise ship design by identifying the particular seakeeping qualities of cruise ships that govern passenger comfort and showing the impact the most important choices in cruise ship design on these governing factors. Attention is paid to the effect of combined motions and roll stabilisation on seasickness, the discomfort introduced by slamming induced whipping and to postural stability.
96.
van den Boom, Henk; van der Hout, Ivo; Flikkema, Maarten
Speed-Power Performance of Ships during Trials and in Service Conference
Greek Section 2nd International Symposium on Ship Operations, Management & Economics, SNAME, 2008.
@conference{Boom2018,
title = {Speed-Power Performance of Ships during Trials and in Service},
author = {Henk van den Boom and Ivo van der Hout and Maarten Flikkema},
url = {http://www.marin.nl/web/JIPs-Networks/Public/STA.htm
http://www.sname.org/home
http://www.staimo.com/},
year = {2008},
date = {2008-01-09},
booktitle = {Greek Section 2nd International Symposium on Ship Operations, Management & Economics},
journal = {SNAME 2008},
publisher = {SNAME},
abstract = {Where in the past the operational cost of a ship was dominated by crew costs, this is now taken over by the bunker costs due to the ever increasing oil prices. To reduce operational costs, ships should be optimised in fuel efficiency considering environmental conditions and operational parameters. As a first step the speedpower relation should be established by means of speed trials upon delivery by the yard. A transparent and accurate industry standard for conducting and analysing speed trials is discussed. New methods to determine the added resistance of ships in waves are presented and a consistent practice for speed trials is proposed. The second step in optimizing the vessel performance is to monitor the speed-power performance of the vessel in
service. The vessel however is navigating under continuously changing loading and environmental conditions. By a proper analysis of the results and a display to the crew, the in service fuel consumption can be reduced by e.g. optimum trim of the vessel, engine settings or timely cleaning of the propeller.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Where in the past the operational cost of a ship was dominated by crew costs, this is now taken over by the bunker costs due to the ever increasing oil prices. To reduce operational costs, ships should be optimised in fuel efficiency considering environmental conditions and operational parameters. As a first step the speedpower relation should be established by means of speed trials upon delivery by the yard. A transparent and accurate industry standard for conducting and analysing speed trials is discussed. New methods to determine the added resistance of ships in waves are presented and a consistent practice for speed trials is proposed. The second step in optimizing the vessel performance is to monitor the speed-power performance of the vessel in
service. The vessel however is navigating under continuously changing loading and environmental conditions. By a proper analysis of the results and a display to the crew, the in service fuel consumption can be reduced by e.g. optimum trim of the vessel, engine settings or timely cleaning of the propeller.
service. The vessel however is navigating under continuously changing loading and environmental conditions. By a proper analysis of the results and a display to the crew, the in service fuel consumption can be reduced by e.g. optimum trim of the vessel, engine settings or timely cleaning of the propeller.
97.
Dallinga, Reint; van Walree, Frans; Grin, Rob; Koning, Jos
Seakeeping issues in the design of containerships Conference
Design & Operation of Container Ships 2008, The Royal Institute of Naval Architects 2008.
@conference{Dallinga2008,
title = {Seakeeping issues in the design of containerships},
author = {Reint Dallinga and Frans van Walree and Rob Grin and Jos Koning},
url = {http://www.marin.nl/web/Publications/Papers/Seakeeping-issues-in-the-design-of-containerships.htm
http://www.rina.org.uk/search_publications.html},
year = {2008},
date = {2008-01-01},
booktitle = {Design & Operation of Container Ships 2008},
organization = {The Royal Institute of Naval Architects},
abstract = {While the advanced art of minimising the installed power for a given speed has a clear role in the design of container ships, the place of seakeeping is less well established. The incidental character of seakeeping problems at sea in combination with the fact that building for good seakeeping may decrease the container capacity and increase the building costs seems a major reason for this, in addition to the sheer complexity of the issues. The present paper
addresses the last point with an effort to give a complete review of the seakeeping issues in containership design. Based on recent experience from model tests the work explores the physical nature of the involuntary speed loss in waves and reasons for a voluntary speed reduction (green water loads, whipping accelerations due to bow and stern slamming, engine racing) or change in course (exposure of containers to wave crests, rolling). In addition a review is given of the extreme behaviour that the master would like to avoid altogether, like excessive heel due to loss of stability in following seas and parametric roll. Based on the results tentative design guidance is formulated.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
While the advanced art of minimising the installed power for a given speed has a clear role in the design of container ships, the place of seakeeping is less well established. The incidental character of seakeeping problems at sea in combination with the fact that building for good seakeeping may decrease the container capacity and increase the building costs seems a major reason for this, in addition to the sheer complexity of the issues. The present paper
addresses the last point with an effort to give a complete review of the seakeeping issues in containership design. Based on recent experience from model tests the work explores the physical nature of the involuntary speed loss in waves and reasons for a voluntary speed reduction (green water loads, whipping accelerations due to bow and stern slamming, engine racing) or change in course (exposure of containers to wave crests, rolling). In addition a review is given of the extreme behaviour that the master would like to avoid altogether, like excessive heel due to loss of stability in following seas and parametric roll. Based on the results tentative design guidance is formulated.
addresses the last point with an effort to give a complete review of the seakeeping issues in containership design. Based on recent experience from model tests the work explores the physical nature of the involuntary speed loss in waves and reasons for a voluntary speed reduction (green water loads, whipping accelerations due to bow and stern slamming, engine racing) or change in course (exposure of containers to wave crests, rolling). In addition a review is given of the extreme behaviour that the master would like to avoid altogether, like excessive heel due to loss of stability in following seas and parametric roll. Based on the results tentative design guidance is formulated.
98.
van Heerd, Jaap
Five decades of innovation and a great future Journal Article
In: MARIN Report, no. 90, pp. 10, 2007.
@article{vanHeerd2007,
title = {Five decades of innovation and a great future},
author = {Jaap van Heerd},
url = {http://www.marin.nl/web/Publications/MARIN-Report/All-issues/MARIN-Report-2007/Five-decades-of-innovation-and-a-great-future.htm},
year = {2007},
date = {2007-02-01},
journal = {MARIN Report},
number = {90},
pages = {10},
abstract = {MARIN started the first investigations into passenger vessels around 1950. During the last decades the size of the vessels, the available power and the requested service speeds have increased dramatically. This requires innovative hull form designs and extensive numerical and experimental research. Report takes a look at some of the highlights of the last 50 years.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
MARIN started the first investigations into passenger vessels around 1950. During the last decades the size of the vessels, the available power and the requested service speeds have increased dramatically. This requires innovative hull form designs and extensive numerical and experimental research. Report takes a look at some of the highlights of the last 50 years.
99.
Allema, Jaap
Intercepting the Interceptor Journal Article
In: MARIN Report, no. 86, pp. 6, 2005.
@article{Allema2005,
title = {Intercepting the Interceptor},
author = {Jaap Allema},
url = {http://www.marin.nl/web/Publications/Publication-items/Intercepting-the-Interceptor-at-MARIN.htm},
year = {2005},
date = {2005-09-01},
journal = {MARIN Report},
number = {86},
pages = {6},
abstract = {Although more associated with semi-planing motoryachts and other fast craft,such as patrol boats,theInterceptor is now being deployed on several models oflarge merchant vessels tested in MARIN basins.Reportplots the progress of the Interceptor as demand grows.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Although more associated with semi-planing motoryachts and other fast craft,such as patrol boats,theInterceptor is now being deployed on several models oflarge merchant vessels tested in MARIN basins.Reportplots the progress of the Interceptor as demand grows.
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