Jie; Chen Dang, Hao
The Second Conference of Global Chinese Scholars on Hydrodynamics, CCSH'2016, 2016.
@conference{Dang2016,
title = {Energy Saving by Using Asymmetric Aftbodies for Merchant Ships – Design Methodology, Numerical Simulation and Validation},
author = {Dang, Jie; Chen, Hao},
url = {http://www.marin.nl/web/Publications/Papers/Energy-Saving-by-Using-Asymmetric-Aftbodies-for-Merchant-Ships-Design-Methodology-Numerical-Simulation-and-Validation.htm },
year = {2016},
date = {2016-11-11},
booktitle = {The Second Conference of Global Chinese Scholars on Hydrodynamics},
publisher = {CCSH'2016},
abstract = {The methodology and procedures are discussed on designing merchant ships to achieve fully-integrated and optimized hull-propulsion systems by using asymmetric aftbodies. Computational Fluid Dynamics (CFD) has been used to evaluate the powering performance through massive calculations with automatic deformation algorisms for the hull forms and the propeller blades. Comparative model tests of the designs to the optimized symmetric hull forms have been carried out to verify the efficiency gain. More than 6% improvement on the propulsive efficiency of an oil tanker has been measured during the model tests. Dedicated sea-trials show good agreement with the predicted performance from the test results.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Henk; Flikkema Prins, Maarten; Schuiling
Green retrofitting through optimisation of hull-propulsion interaction - GRIP Conference
Proceedings of 6th Transport Research Arena, Warsaw, Poland, 2016.
@conference{Prins2016,
title = {Green retrofitting through optimisation of hull-propulsion interaction - GRIP},
author = {Prins, Henk; Flikkema, Maarten; Schuiling, Bart; Xing-Kaeding, Y; Voermans, A. A. M.; Müller, M; Coache, S; Hasselaar, Thijs; Paboeuf, S},
url = {http://www.marin.nl/web/Publications/Papers/Green-retrofitting-through-optimisation-of-hullpropulsion-interaction-GRIP.htm },
year = {2016},
date = {2016-04-18},
booktitle = {Proceedings of 6th Transport Research Arena, Warsaw, Poland},
abstract = {In the FP7 project GRIP, partners have extensively studied Energy Saving Devices which improve the propulsive efficiency of ships. The research has focussed on an early assessment of the performance, yard processes for the installation of an ESD, structural issues related to ESDs, and the hydrodynamical working principles of ESDs. All the work came together in the final demonstration of the efficiency gain of an ESD on Uljanik built bulk carrier MV Valvoline.
To demonstrate the ESD design procedure and the potential performance gain of ESDs, a design competition was held between MARIN, HSVA and Vicus who designed a pre-duct, pre-swirl stator and rudder bulb respectively. Designs were evaluated based on the performance improvement, manufacturability and structural issues. The PSS designed by HSVA came out the best with a reduction of required propulsion power. CFD analysis has shown that the PSS creates a pre-swirl resulting in an increase of the propeller efficiency mainly affecting the upcoming blade trajectory. Speed trial procedures were evaluated by MARIN to come to a procedure to evaluate the performance change with a minimum uncertainty. Speed trials before and after installation of the PSS on the bulk carrier were performed in favourable environmental conditions resulting in a performance improvement of 6.8% at a speed of 16 knots.
This paper gives an overview of the work performed in the project by all partners resulting in the successful demonstration.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
To demonstrate the ESD design procedure and the potential performance gain of ESDs, a design competition was held between MARIN, HSVA and Vicus who designed a pre-duct, pre-swirl stator and rudder bulb respectively. Designs were evaluated based on the performance improvement, manufacturability and structural issues. The PSS designed by HSVA came out the best with a reduction of required propulsion power. CFD analysis has shown that the PSS creates a pre-swirl resulting in an increase of the propeller efficiency mainly affecting the upcoming blade trajectory. Speed trial procedures were evaluated by MARIN to come to a procedure to evaluate the performance change with a minimum uncertainty. Speed trials before and after installation of the PSS on the bulk carrier were performed in favourable environmental conditions resulting in a performance improvement of 6.8% at a speed of 16 knots.
This paper gives an overview of the work performed in the project by all partners resulting in the successful demonstration.
Dang, Jie; Chen, Hao; Rueda, Luis; Willemsen, Harry
Fourth International Symposium on Marine Propulsors (SMP), Austin, Texas , Symposiums on Marine Propulsors 2015.
@conference{Dang2015,
title = {Integrated Design of Asymmetric Aftbody and Propeller for an Aframax Tanker to Maximize Energy Efficiency},
author = {Jie Dang and Hao Chen and Luis Rueda and Harry Willemsen},
url = {http://www.marin.nl/web/Publications/Papers/Integrated-Design-of-Asymmetric-Aftbody-and-Propeller-for-an-Aframax-Tanker-to-Maximize-Energy-Efficiency.htm
http://www.marinepropulsors.com/proceedings.php},
year = {2015},
date = {2015-06-01},
booktitle = {Fourth International Symposium on Marine Propulsors (SMP), Austin, Texas },
organization = {Symposiums on Marine Propulsors},
abstract = {With the implementation of the EEDI, energy saving and emission reduction of ships, especially merchant ships, become more and more important. To achieve high efficiency and low emissions, recently Energy Saving Devices (ESDs) have been re-studied and installed to many ships, both new buildings and also retrofits. Various ESDs, including new concepts, have been tested in model scale and large improvements on energy efficiency have been confirmed. However due to the fact that most ESDs are fitted in the wake field, the performance of the ESDs is influenced by scale effects. For the operators, the fouling and the structure integration of the ESD’s with the hull are the important issues to make decisions on applying ESDs to their ships.
Distinguished from the ESDs where extra ‘appendages’ have to be added in front of and/or behind a propeller, an asymmetric aftbody can also change the flow towards the propeller without appendages. The wake with pre-swirl generated by an asymmetric aftbody is in general more uniform than that by an ESD (such as a pre-stator with finite blades) and with almost no penalty on the ship’s resistance. By integrating a propeller, a ship with asymmetric aftbody can be designed so that the hull-propeller interaction is optimized for its total propulsive efficiency and the required shaft power is minimized at given speed.
In this paper, discussions have been given on the optimization procedure by using the Computational Fluid Dynamics (CFD) towards a fully-integrated hull-propeller design to maximize the energy efficiency of a single screw ship. Comparative model tests, carried out with optimized symmetric and asymmetric ships, showed more than 6% gain in efficiency with a moderate asymmetric aftbody, without detriments to its course stability. },
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Distinguished from the ESDs where extra ‘appendages’ have to be added in front of and/or behind a propeller, an asymmetric aftbody can also change the flow towards the propeller without appendages. The wake with pre-swirl generated by an asymmetric aftbody is in general more uniform than that by an ESD (such as a pre-stator with finite blades) and with almost no penalty on the ship’s resistance. By integrating a propeller, a ship with asymmetric aftbody can be designed so that the hull-propeller interaction is optimized for its total propulsive efficiency and the required shaft power is minimized at given speed.
In this paper, discussions have been given on the optimization procedure by using the Computational Fluid Dynamics (CFD) towards a fully-integrated hull-propeller design to maximize the energy efficiency of a single screw ship. Comparative model tests, carried out with optimized symmetric and asymmetric ships, showed more than 6% gain in efficiency with a moderate asymmetric aftbody, without detriments to its course stability.
Schuiling, Bart; vaz, Guilherme
ReFRESCO plays major role in understanding and designing Energy Saving Devices Journal Article
In: MARIN Report, no. 109, pp. 14-15, 2013.
@article{Schuiling2013,
title = {ReFRESCO plays major role in understanding and designing Energy Saving Devices},
author = {Bart Schuiling and Guilherme vaz},
url = {http://www.marin.nl/extra/marin-bladermodules/html/109/#14},
year = {2013},
date = {2013-08-01},
journal = {MARIN Report},
number = {109},
pages = {14-15},
abstract = {Using Computational Fluid Dynamics (CFD), new insights can be obtained into the working principles of Energy Saving Devices (ESDs), which all serve to increase the fuel efficiency of a ship. The advantages of using ReFRESCO to study ESDs are explored in this article.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
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}
}
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.
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}
}
2016
Jie; Chen Dang, Hao
The Second Conference of Global Chinese Scholars on Hydrodynamics, CCSH'2016, 2016.
Abstract | Links | BibTeX | Tags: EEDI, efficiency, Energy Saving Device, ESD, Fuel consumption, full scale, measurement, sea trial, ship design
@conference{Dang2016,
title = {Energy Saving by Using Asymmetric Aftbodies for Merchant Ships – Design Methodology, Numerical Simulation and Validation},
author = {Dang, Jie; Chen, Hao},
url = {http://www.marin.nl/web/Publications/Papers/Energy-Saving-by-Using-Asymmetric-Aftbodies-for-Merchant-Ships-Design-Methodology-Numerical-Simulation-and-Validation.htm },
year = {2016},
date = {2016-11-11},
booktitle = {The Second Conference of Global Chinese Scholars on Hydrodynamics},
publisher = {CCSH'2016},
abstract = {The methodology and procedures are discussed on designing merchant ships to achieve fully-integrated and optimized hull-propulsion systems by using asymmetric aftbodies. Computational Fluid Dynamics (CFD) has been used to evaluate the powering performance through massive calculations with automatic deformation algorisms for the hull forms and the propeller blades. Comparative model tests of the designs to the optimized symmetric hull forms have been carried out to verify the efficiency gain. More than 6% improvement on the propulsive efficiency of an oil tanker has been measured during the model tests. Dedicated sea-trials show good agreement with the predicted performance from the test results.},
keywords = {EEDI, efficiency, Energy Saving Device, ESD, Fuel consumption, full scale, measurement, sea trial, ship design},
pubstate = {published},
tppubtype = {conference}
}
Henk; Flikkema Prins, Maarten; Schuiling
Green retrofitting through optimisation of hull-propulsion interaction - GRIP Conference
Proceedings of 6th Transport Research Arena, Warsaw, Poland, 2016.
Abstract | Links | BibTeX | Tags: CFD, Energy Saving Device, ESD, full scale validation, retrofitting, ship performance, structural
@conference{Prins2016,
title = {Green retrofitting through optimisation of hull-propulsion interaction - GRIP},
author = {Prins, Henk; Flikkema, Maarten; Schuiling, Bart; Xing-Kaeding, Y; Voermans, A. A. M.; Müller, M; Coache, S; Hasselaar, Thijs; Paboeuf, S},
url = {http://www.marin.nl/web/Publications/Papers/Green-retrofitting-through-optimisation-of-hullpropulsion-interaction-GRIP.htm },
year = {2016},
date = {2016-04-18},
booktitle = {Proceedings of 6th Transport Research Arena, Warsaw, Poland},
abstract = {In the FP7 project GRIP, partners have extensively studied Energy Saving Devices which improve the propulsive efficiency of ships. The research has focussed on an early assessment of the performance, yard processes for the installation of an ESD, structural issues related to ESDs, and the hydrodynamical working principles of ESDs. All the work came together in the final demonstration of the efficiency gain of an ESD on Uljanik built bulk carrier MV Valvoline.
To demonstrate the ESD design procedure and the potential performance gain of ESDs, a design competition was held between MARIN, HSVA and Vicus who designed a pre-duct, pre-swirl stator and rudder bulb respectively. Designs were evaluated based on the performance improvement, manufacturability and structural issues. The PSS designed by HSVA came out the best with a reduction of required propulsion power. CFD analysis has shown that the PSS creates a pre-swirl resulting in an increase of the propeller efficiency mainly affecting the upcoming blade trajectory. Speed trial procedures were evaluated by MARIN to come to a procedure to evaluate the performance change with a minimum uncertainty. Speed trials before and after installation of the PSS on the bulk carrier were performed in favourable environmental conditions resulting in a performance improvement of 6.8% at a speed of 16 knots.
This paper gives an overview of the work performed in the project by all partners resulting in the successful demonstration.},
keywords = {CFD, Energy Saving Device, ESD, full scale validation, retrofitting, ship performance, structural},
pubstate = {published},
tppubtype = {conference}
}
To demonstrate the ESD design procedure and the potential performance gain of ESDs, a design competition was held between MARIN, HSVA and Vicus who designed a pre-duct, pre-swirl stator and rudder bulb respectively. Designs were evaluated based on the performance improvement, manufacturability and structural issues. The PSS designed by HSVA came out the best with a reduction of required propulsion power. CFD analysis has shown that the PSS creates a pre-swirl resulting in an increase of the propeller efficiency mainly affecting the upcoming blade trajectory. Speed trial procedures were evaluated by MARIN to come to a procedure to evaluate the performance change with a minimum uncertainty. Speed trials before and after installation of the PSS on the bulk carrier were performed in favourable environmental conditions resulting in a performance improvement of 6.8% at a speed of 16 knots.
This paper gives an overview of the work performed in the project by all partners resulting in the successful demonstration.
2015
Dang, Jie; Chen, Hao; Rueda, Luis; Willemsen, Harry
Fourth International Symposium on Marine Propulsors (SMP), Austin, Texas , Symposiums on Marine Propulsors 2015.
Abstract | Links | BibTeX | Tags: aframax, asymmetric aftbody, CFD, efficiency, Energy Saving Device, ESD, propeller, RANS-BEM, tanker
@conference{Dang2015,
title = {Integrated Design of Asymmetric Aftbody and Propeller for an Aframax Tanker to Maximize Energy Efficiency},
author = {Jie Dang and Hao Chen and Luis Rueda and Harry Willemsen},
url = {http://www.marin.nl/web/Publications/Papers/Integrated-Design-of-Asymmetric-Aftbody-and-Propeller-for-an-Aframax-Tanker-to-Maximize-Energy-Efficiency.htm
http://www.marinepropulsors.com/proceedings.php},
year = {2015},
date = {2015-06-01},
booktitle = {Fourth International Symposium on Marine Propulsors (SMP), Austin, Texas },
organization = {Symposiums on Marine Propulsors},
abstract = {With the implementation of the EEDI, energy saving and emission reduction of ships, especially merchant ships, become more and more important. To achieve high efficiency and low emissions, recently Energy Saving Devices (ESDs) have been re-studied and installed to many ships, both new buildings and also retrofits. Various ESDs, including new concepts, have been tested in model scale and large improvements on energy efficiency have been confirmed. However due to the fact that most ESDs are fitted in the wake field, the performance of the ESDs is influenced by scale effects. For the operators, the fouling and the structure integration of the ESD’s with the hull are the important issues to make decisions on applying ESDs to their ships.
Distinguished from the ESDs where extra ‘appendages’ have to be added in front of and/or behind a propeller, an asymmetric aftbody can also change the flow towards the propeller without appendages. The wake with pre-swirl generated by an asymmetric aftbody is in general more uniform than that by an ESD (such as a pre-stator with finite blades) and with almost no penalty on the ship’s resistance. By integrating a propeller, a ship with asymmetric aftbody can be designed so that the hull-propeller interaction is optimized for its total propulsive efficiency and the required shaft power is minimized at given speed.
In this paper, discussions have been given on the optimization procedure by using the Computational Fluid Dynamics (CFD) towards a fully-integrated hull-propeller design to maximize the energy efficiency of a single screw ship. Comparative model tests, carried out with optimized symmetric and asymmetric ships, showed more than 6% gain in efficiency with a moderate asymmetric aftbody, without detriments to its course stability. },
keywords = {aframax, asymmetric aftbody, CFD, efficiency, Energy Saving Device, ESD, propeller, RANS-BEM, tanker},
pubstate = {published},
tppubtype = {conference}
}
Distinguished from the ESDs where extra ‘appendages’ have to be added in front of and/or behind a propeller, an asymmetric aftbody can also change the flow towards the propeller without appendages. The wake with pre-swirl generated by an asymmetric aftbody is in general more uniform than that by an ESD (such as a pre-stator with finite blades) and with almost no penalty on the ship’s resistance. By integrating a propeller, a ship with asymmetric aftbody can be designed so that the hull-propeller interaction is optimized for its total propulsive efficiency and the required shaft power is minimized at given speed.
In this paper, discussions have been given on the optimization procedure by using the Computational Fluid Dynamics (CFD) towards a fully-integrated hull-propeller design to maximize the energy efficiency of a single screw ship. Comparative model tests, carried out with optimized symmetric and asymmetric ships, showed more than 6% gain in efficiency with a moderate asymmetric aftbody, without detriments to its course stability.
2013
Schuiling, Bart; vaz, Guilherme
ReFRESCO plays major role in understanding and designing Energy Saving Devices Journal Article
In: MARIN Report, no. 109, pp. 14-15, 2013.
Abstract | Links | BibTeX | Tags: CFD, Energy Saving Device, ESD, ReFRESCO
@article{Schuiling2013,
title = {ReFRESCO plays major role in understanding and designing Energy Saving Devices},
author = {Bart Schuiling and Guilherme vaz},
url = {http://www.marin.nl/extra/marin-bladermodules/html/109/#14},
year = {2013},
date = {2013-08-01},
journal = {MARIN Report},
number = {109},
pages = {14-15},
abstract = {Using Computational Fluid Dynamics (CFD), new insights can be obtained into the working principles of Energy Saving Devices (ESDs), which all serve to increase the fuel efficiency of a ship. The advantages of using ReFRESCO to study ESDs are explored in this article.},
keywords = {CFD, Energy Saving Device, ESD, ReFRESCO},
pubstate = {published},
tppubtype = {article}
}
2011
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.
Abstract | Links | BibTeX | Tags: CFD, duct, efficiency, Energy Saving Device, ESD, ESD-JILI, PBCF, PIV, stator
@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 = {CFD, duct, efficiency, Energy Saving Device, ESD, ESD-JILI, PBCF, PIV, stator},
pubstate = {published},
tppubtype = {conference}
}
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.
2005
Allema, Jaap
Intercepting the Interceptor Journal Article
In: MARIN Report, no. 86, pp. 6, 2005.
Abstract | Links | BibTeX | Tags: aft body, cruise, Energy Saving Device, ESD, Fuel consumption, interceptor, resistance
@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 = {aft body, cruise, Energy Saving Device, ESD, Fuel consumption, interceptor, resistance},
pubstate = {published},
tppubtype = {article}
}