H. Abreu, Eça; Klaij, C. M.
20th Numerical Towing Tank Symposium (NuTTS), Wageningen, The Netherlands, 2017.
@conference{Abreu2017,
title = {Code Verification Exercise of a Navier-Stokes Solver for Compressible Flows in the Laminar and Subsonic Regimes},
author = {Abreu, H., Eça, L., and Klaij, C.M.},
url = {http://www.marin.nl/web/Publications/Publication-items/Code-Verification-Exercise-of-a-NavierStokes-Solver-for-Compressible-Flows-in-the-Laminar-and-Subsonic-Regimes.htm},
year = {2017},
date = {2017-10-03},
booktitle = {20th Numerical Towing Tank Symposium (NuTTS), Wageningen, The Netherlands},
abstract = {Many of the flows of interest to the naval and offshore industries deal with fluids that are usually assumed to be incompressible. However, there are several phenomena, as for example slamming, sloshing or cavitation where the fluid compressibility must be taken into account. All these applications involve compressible two-phase flows, which are the ultimate goal of the present development of the flow solver ReFRESCO.
As a first step of this development, this paper presents a Code Verification exercise performed with the Method of Manufactured Solutions, for laminar compressible flows in the subsonic regime. This first extension of ReFRESCO for a fluid that obeys the perfect gas equation of state requires two steps: 1. Adaptation of the SIMPLE algorithm used to determine the pressure field. 2. Solution of the energy equation to determine the temperature field.
This first step of the development is well documented in the open literature for both single phase and multiphase flows. On the other hand, the energy equation is already available in ReFRESCO but it is seldom solved in incompressible flow solutions. However, its formulation must be updated due to the change of the equation of state. Nonetheless, the present paper presents one more manufactured solution for the Verification of compressible solvers and guarantees that we start this development with a good basis.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
As a first step of this development, this paper presents a Code Verification exercise performed with the Method of Manufactured Solutions, for laminar compressible flows in the subsonic regime. This first extension of ReFRESCO for a fluid that obeys the perfect gas equation of state requires two steps: 1. Adaptation of the SIMPLE algorithm used to determine the pressure field. 2. Solution of the energy equation to determine the temperature field.
This first step of the development is well documented in the open literature for both single phase and multiphase flows. On the other hand, the energy equation is already available in ReFRESCO but it is seldom solved in incompressible flow solutions. However, its formulation must be updated due to the change of the equation of state. Nonetheless, the present paper presents one more manufactured solution for the Verification of compressible solvers and guarantees that we start this development with a good basis.
A. Maximiano, Vaz; Scharnke, J.
CFD Verification and Validation Study for a Captive Bullet Entry in Calm Water Conference
OMAE ASME 36th International Conference on Ocean, Offshore and Arctic Engineering, Trondheim, Norway, 2017.
@conference{Maximiano2017,
title = {CFD Verification and Validation Study for a Captive Bullet Entry in Calm Water},
author = {Maximiano, A., Vaz, G. and Scharnke, J.},
url = {http://www.marin.nl/web/Publications/Publication-items/CFD-Verification-and-Validation-Study-for-a-Captive-Bullet-Entry-in-Calm-Water.htm},
year = {2017},
date = {2017-06-25},
booktitle = {OMAE ASME 36th International Conference on Ocean, Offshore and Arctic Engineering, Trondheim, Norway},
pages = {OMAE2017-61666},
abstract = {As a step towards complex impact loads cases, e.g. lifeboat drop tests or ship/platform slamming in waves, a verification and validation (V&V) study is carried out with an open-usage community based CFD code ReFRESCO for a simple impact load test case: a captive axisymmetric generic lifeboat shape (bullet) that penetrates the water surface at a constant velocity and angle of attack. The quantities of interest are the body fixed longitudinal force FX, vertical force FZ, and pitch moment MYY.
The influence of the iterative convergence level, domain size and free surface modelling are investigated. Seven different grids and four time steps were used to assess the grid and time step sensitivity, in a total of 28 calculations. For the tested grids and time steps it was found that the results are more sensitive to the grid resolution than to the time step. The pressure distribution on the hull is correlated with the trends observed in the loads, and the relation between between relative and static pressure is found to be important for the calculated loads. An experimental test campaign was previously carried out by MARIN, and its results are used to validate the simulations performed. A very good match between experiments and simulations is found.
A V&V study is performed for the quantities of interest at nine different time instants covering the impact phase. The numerical uncertainties are obtained from a solution verification procedure [1]. The experimental uncertainties are estimated, and a validation exercise carried out according to the ASME standards [2]. The outcome of the validation exercise is an estimated 95% confidence interval for the modelling error, M. For FX the modelling error is below 15 N, for 8 out of 9 time instants. For FZ the modelling error is below 14 N, except at the time instants where, due to vibrations in the experimental setup, a larger value (up to 23 N) is found. For MYY the modelling error is under 5Nm. These results provide confidence in ReFRESCO for the simulation of free surface impact flows.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
The influence of the iterative convergence level, domain size and free surface modelling are investigated. Seven different grids and four time steps were used to assess the grid and time step sensitivity, in a total of 28 calculations. For the tested grids and time steps it was found that the results are more sensitive to the grid resolution than to the time step. The pressure distribution on the hull is correlated with the trends observed in the loads, and the relation between between relative and static pressure is found to be important for the calculated loads. An experimental test campaign was previously carried out by MARIN, and its results are used to validate the simulations performed. A very good match between experiments and simulations is found.
A V&V study is performed for the quantities of interest at nine different time instants covering the impact phase. The numerical uncertainties are obtained from a solution verification procedure [1]. The experimental uncertainties are estimated, and a validation exercise carried out according to the ASME standards [2]. The outcome of the validation exercise is an estimated 95% confidence interval for the modelling error, M. For FX the modelling error is below 15 N, for 8 out of 9 time instants. For FZ the modelling error is below 14 N, except at the time instants where, due to vibrations in the experimental setup, a larger value (up to 23 N) is found. For MYY the modelling error is under 5Nm. These results provide confidence in ReFRESCO for the simulation of free surface impact flows.
Guilherme Vaz, Thomas Lloyd; Gnanasundaram, Arun
Improved Modelling Of Sheet Cavitation Dynamics On Delft Twistll Hydrofoil Conference
VII International Conference on Computational Methods in Marine Engineering, 2017.
@conference{Vaz2017,
title = {Improved Modelling Of Sheet Cavitation Dynamics On Delft Twistll Hydrofoil},
author = {Guilherme Vaz, Thomas Lloyd and Arun Gnanasundaram},
url = {http://www.marin.nl/web/Publications/Publication-items/Improved-Modelling-Of-Sheet-Cavitation-Dynamics-On-Delft-Twistll-Hydrofoil.htm},
year = {2017},
date = {2017-05-01},
booktitle = {VII International Conference on Computational Methods in Marine Engineering},
abstract = {In this paper, unsteady viscous-flow cavitation predictions for a 3D hydrofoil are performed using three different approaches: 1) a pure RANS method; 2) a RANS method including an eddy-viscosity “Reboud” correction; 3) a DDES Scale-Resolving-Simulation approach. Both wetted and cavitating flow conditions are analysed and compared with experimental data. The accuracy of these approaches is scrutinised in terms of integral quantities, cavity dynamics, different background principles, and the influence of grid refinement. Low numerical uncertainties have been obtained for wetted flow conditions, but a somewhat large deviation on the wing loading has been observed when compared with experimental results. For the cavitating flow case, the RANS calculations do not accurately simulate the cavity dynamics. The RANSReboud correction improves the fidelity of the calculations at increased numerical demands and decreased robustness. The DDES approach leads to improved dynamics, slightly less accurate cavity shedding mechanism, at lower computational cost. The cavity extents are underpredicted for all methods and conditions used, when compared with the available experimental data.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
M. Kerkvliet, Carette; Straten, O. van
Analysis of free surface anti-roll tank using URANS. Verification and validation Conference
13th International Symposium on Practical Design of Ships (PRADS), Copenhagen, Denmark, 2016.
@conference{Kerkvliet2016,
title = {Analysis of free surface anti-roll tank using URANS. Verification and validation},
author = {Kerkvliet, M., Carette, N. and Straten, O. van},
url = {http://www.marin.nl/web/Publications/Papers/Analysis-of-free-surface-antiroll-tank-using-URANS.-Verification-and-validation-1.htm},
year = {2016},
date = {2016-09-04},
booktitle = {13th International Symposium on Practical Design of Ships (PRADS), Copenhagen, Denmark},
pages = {ID055},
abstract = {To prevent excessive roll motion of ships operating in seas, damping systems are often required. Exterior systems can be used like, bilge keels or active stabilizer fins, or interior systems like anti-roll tanks (ARTs). There are mainly two sorts of ARTs, i.e. free surface tanks and Utype tanks. Both types have been studied extensively in the past, e.g. by Watts (1883), Frahm (1911) and Verhagen and Wijngaarden (1965), but also more recently, e.g. by Lee and Vassalos (1996), Kerkvliet et al. (2014) and Carette (2015). The content of this paper is restricted to the free surface type ART, which is nowadays often used to increase the roll damping of ships passively. The main advantages of such an ART are the large damping moment at small roll amplitudes and the ease to adapt the response by changing the water level. The response of the tank is highly frequency and amplitude dependent with a strong non-linear character (Carette et al., 2016). Also the shape of the interior geometry, e.g. additional struts, plates or other flow obstructions, will have an effect on the response, which makes it difficult to predict the response by analytical models. Therefore, systematic oscillation tests are often performed by model-scale experiments or by use of Computational Fluid Dynamics (CFD). This paper shows the response of a two-dimensional (2D) and three-dimensional (3D) model-scale free surface ART using the CFD code ReFRESCO (www.refresco.org). The objective of this paper is to show which issues are important when CFD is used as a research and design tool. A verification and validation study is performed to determine numerical settings to obtain a good trade-off between accuracy and computational costs. The CFD results are validated against model-scale experimental results, based on the work of Carette (2015). The results show that CFD can be used as a simulation driven design tool to accurately predict the response of an ART.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
Toxopeus, S. L.; Bhawsinka, K.
Calculation of hydrodynamic interaction forces on a ship entering a Lock using CFD Conference
Fourth International Conference on Ship Manoeuvring in Shallow and Confined Water (MASHCON) - Ship Bottom Interaction, Hamburg, Germany, 2016.
@conference{Toxopeus2016,
title = {Calculation of hydrodynamic interaction forces on a ship entering a Lock using CFD},
author = {Toxopeus, S.L. and Bhawsinka, K.},
url = {http://www.marin.nl/web/Publications/Papers/Calculation-of-hydrodynamic-interaction-forces-on-a-ship-entering-a-Lock-using-CFD.htm},
doi = {10.18451/978-3-939230-38-0_34},
year = {2016},
date = {2016-05-01},
booktitle = {Fourth International Conference on Ship Manoeuvring in Shallow and Confined Water (MASHCON) - Ship Bottom Interaction, Hamburg, Germany},
pages = {6_01},
abstract = {Estimation of hydrodynamic interaction forces experienced by a ship entering a lock plays an important role in the initial design phase of the lock. These forces govern the speed at which a ship can enter the lock and also the tug requirement for facilitating such manoeuvres. Hence hydrodynamic interaction forces can influence the turnaround time and the operational cost of the locks. Traditionally these forces have been calculated using model tests or by potential flow solvers.
In this paper, a study is presented on predicting ship-lock interaction effects with the viscous-flow solver ReFRESCO. The scenario consists of a large-beam bulk carrier entering the Pierre Vandamme Lock in Zeebrugge, Belgium. To validate the predictions, existing model tests are used. Furthermore, the results are compared to potential flow computations and CFD results from literature to highlight the benefits of each approach.
The paper will show that with careful setup of the computations, reliable predictions of the ship-lock interaction effects can be obtained. In order to capture all physics of the interaction, viscous-flow computations are preferred above potential-flow predictions.},
keywords = {},
pubstate = {published},
tppubtype = {conference}
}
In this paper, a study is presented on predicting ship-lock interaction effects with the viscous-flow solver ReFRESCO. The scenario consists of a large-beam bulk carrier entering the Pierre Vandamme Lock in Zeebrugge, Belgium. To validate the predictions, existing model tests are used. Furthermore, the results are compared to potential flow computations and CFD results from literature to highlight the benefits of each approach.
The paper will show that with careful setup of the computations, reliable predictions of the ship-lock interaction effects can be obtained. In order to capture all physics of the interaction, viscous-flow computations are preferred above potential-flow predictions.
Prins, Henk
MARIN invests in the future as CFD takes on more prominent role Journal Article
In: MARIN Report, no. 115, pp. 12-13, 2015.
@article{Prins2015,
title = {MARIN invests in the future as CFD takes on more prominent role},
author = {Henk Prins},
url = {http://content.yudu.com/web/1r3p1/0A3a046/MR115/html/index.html?page=12},
year = {2015},
date = {2015-08-01},
journal = {MARIN Report},
number = {115},
pages = {12-13},
abstract = {To facilitate the use of reliable CFD in the design and engineering process, MARIN has invested in a new, large computer cluster, and is sharing its CFD code ReFRESCO with its customers.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
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}
}
2017
H. Abreu, Eça; Klaij, C. M.
20th Numerical Towing Tank Symposium (NuTTS), Wageningen, The Netherlands, 2017.
Abstract | Links | BibTeX | Tags: Code verification, Manufactured solutions, ReFRESCO
@conference{Abreu2017,
title = {Code Verification Exercise of a Navier-Stokes Solver for Compressible Flows in the Laminar and Subsonic Regimes},
author = {Abreu, H., Eça, L., and Klaij, C.M.},
url = {http://www.marin.nl/web/Publications/Publication-items/Code-Verification-Exercise-of-a-NavierStokes-Solver-for-Compressible-Flows-in-the-Laminar-and-Subsonic-Regimes.htm},
year = {2017},
date = {2017-10-03},
booktitle = {20th Numerical Towing Tank Symposium (NuTTS), Wageningen, The Netherlands},
abstract = {Many of the flows of interest to the naval and offshore industries deal with fluids that are usually assumed to be incompressible. However, there are several phenomena, as for example slamming, sloshing or cavitation where the fluid compressibility must be taken into account. All these applications involve compressible two-phase flows, which are the ultimate goal of the present development of the flow solver ReFRESCO.
As a first step of this development, this paper presents a Code Verification exercise performed with the Method of Manufactured Solutions, for laminar compressible flows in the subsonic regime. This first extension of ReFRESCO for a fluid that obeys the perfect gas equation of state requires two steps: 1. Adaptation of the SIMPLE algorithm used to determine the pressure field. 2. Solution of the energy equation to determine the temperature field.
This first step of the development is well documented in the open literature for both single phase and multiphase flows. On the other hand, the energy equation is already available in ReFRESCO but it is seldom solved in incompressible flow solutions. However, its formulation must be updated due to the change of the equation of state. Nonetheless, the present paper presents one more manufactured solution for the Verification of compressible solvers and guarantees that we start this development with a good basis.},
keywords = {Code verification, Manufactured solutions, ReFRESCO},
pubstate = {published},
tppubtype = {conference}
}
As a first step of this development, this paper presents a Code Verification exercise performed with the Method of Manufactured Solutions, for laminar compressible flows in the subsonic regime. This first extension of ReFRESCO for a fluid that obeys the perfect gas equation of state requires two steps: 1. Adaptation of the SIMPLE algorithm used to determine the pressure field. 2. Solution of the energy equation to determine the temperature field.
This first step of the development is well documented in the open literature for both single phase and multiphase flows. On the other hand, the energy equation is already available in ReFRESCO but it is seldom solved in incompressible flow solutions. However, its formulation must be updated due to the change of the equation of state. Nonetheless, the present paper presents one more manufactured solution for the Verification of compressible solvers and guarantees that we start this development with a good basis.
A. Maximiano, Vaz; Scharnke, J.
CFD Verification and Validation Study for a Captive Bullet Entry in Calm Water Conference
OMAE ASME 36th International Conference on Ocean, Offshore and Arctic Engineering, Trondheim, Norway, 2017.
Abstract | Links | BibTeX | Tags: CFD, ReFRESCO, verification and validation
@conference{Maximiano2017,
title = {CFD Verification and Validation Study for a Captive Bullet Entry in Calm Water},
author = {Maximiano, A., Vaz, G. and Scharnke, J.},
url = {http://www.marin.nl/web/Publications/Publication-items/CFD-Verification-and-Validation-Study-for-a-Captive-Bullet-Entry-in-Calm-Water.htm},
year = {2017},
date = {2017-06-25},
booktitle = {OMAE ASME 36th International Conference on Ocean, Offshore and Arctic Engineering, Trondheim, Norway},
pages = {OMAE2017-61666},
abstract = {As a step towards complex impact loads cases, e.g. lifeboat drop tests or ship/platform slamming in waves, a verification and validation (V&V) study is carried out with an open-usage community based CFD code ReFRESCO for a simple impact load test case: a captive axisymmetric generic lifeboat shape (bullet) that penetrates the water surface at a constant velocity and angle of attack. The quantities of interest are the body fixed longitudinal force FX, vertical force FZ, and pitch moment MYY.
The influence of the iterative convergence level, domain size and free surface modelling are investigated. Seven different grids and four time steps were used to assess the grid and time step sensitivity, in a total of 28 calculations. For the tested grids and time steps it was found that the results are more sensitive to the grid resolution than to the time step. The pressure distribution on the hull is correlated with the trends observed in the loads, and the relation between between relative and static pressure is found to be important for the calculated loads. An experimental test campaign was previously carried out by MARIN, and its results are used to validate the simulations performed. A very good match between experiments and simulations is found.
A V&V study is performed for the quantities of interest at nine different time instants covering the impact phase. The numerical uncertainties are obtained from a solution verification procedure [1]. The experimental uncertainties are estimated, and a validation exercise carried out according to the ASME standards [2]. The outcome of the validation exercise is an estimated 95% confidence interval for the modelling error, M. For FX the modelling error is below 15 N, for 8 out of 9 time instants. For FZ the modelling error is below 14 N, except at the time instants where, due to vibrations in the experimental setup, a larger value (up to 23 N) is found. For MYY the modelling error is under 5Nm. These results provide confidence in ReFRESCO for the simulation of free surface impact flows.},
keywords = {CFD, ReFRESCO, verification and validation},
pubstate = {published},
tppubtype = {conference}
}
The influence of the iterative convergence level, domain size and free surface modelling are investigated. Seven different grids and four time steps were used to assess the grid and time step sensitivity, in a total of 28 calculations. For the tested grids and time steps it was found that the results are more sensitive to the grid resolution than to the time step. The pressure distribution on the hull is correlated with the trends observed in the loads, and the relation between between relative and static pressure is found to be important for the calculated loads. An experimental test campaign was previously carried out by MARIN, and its results are used to validate the simulations performed. A very good match between experiments and simulations is found.
A V&V study is performed for the quantities of interest at nine different time instants covering the impact phase. The numerical uncertainties are obtained from a solution verification procedure [1]. The experimental uncertainties are estimated, and a validation exercise carried out according to the ASME standards [2]. The outcome of the validation exercise is an estimated 95% confidence interval for the modelling error, M. For FX the modelling error is below 15 N, for 8 out of 9 time instants. For FZ the modelling error is below 14 N, except at the time instants where, due to vibrations in the experimental setup, a larger value (up to 23 N) is found. For MYY the modelling error is under 5Nm. These results provide confidence in ReFRESCO for the simulation of free surface impact flows.
Guilherme Vaz, Thomas Lloyd; Gnanasundaram, Arun
Improved Modelling Of Sheet Cavitation Dynamics On Delft Twistll Hydrofoil Conference
VII International Conference on Computational Methods in Marine Engineering, 2017.
Abstract | Links | BibTeX | Tags: cavitation, DDES, Delft Foil, RANS, Reboud-correction, ReFRESCO
@conference{Vaz2017,
title = {Improved Modelling Of Sheet Cavitation Dynamics On Delft Twistll Hydrofoil},
author = {Guilherme Vaz, Thomas Lloyd and Arun Gnanasundaram},
url = {http://www.marin.nl/web/Publications/Publication-items/Improved-Modelling-Of-Sheet-Cavitation-Dynamics-On-Delft-Twistll-Hydrofoil.htm},
year = {2017},
date = {2017-05-01},
booktitle = {VII International Conference on Computational Methods in Marine Engineering},
abstract = {In this paper, unsteady viscous-flow cavitation predictions for a 3D hydrofoil are performed using three different approaches: 1) a pure RANS method; 2) a RANS method including an eddy-viscosity “Reboud” correction; 3) a DDES Scale-Resolving-Simulation approach. Both wetted and cavitating flow conditions are analysed and compared with experimental data. The accuracy of these approaches is scrutinised in terms of integral quantities, cavity dynamics, different background principles, and the influence of grid refinement. Low numerical uncertainties have been obtained for wetted flow conditions, but a somewhat large deviation on the wing loading has been observed when compared with experimental results. For the cavitating flow case, the RANS calculations do not accurately simulate the cavity dynamics. The RANSReboud correction improves the fidelity of the calculations at increased numerical demands and decreased robustness. The DDES approach leads to improved dynamics, slightly less accurate cavity shedding mechanism, at lower computational cost. The cavity extents are underpredicted for all methods and conditions used, when compared with the available experimental data.},
keywords = {cavitation, DDES, Delft Foil, RANS, Reboud-correction, ReFRESCO},
pubstate = {published},
tppubtype = {conference}
}
2016
M. Kerkvliet, Carette; Straten, O. van
Analysis of free surface anti-roll tank using URANS. Verification and validation Conference
13th International Symposium on Practical Design of Ships (PRADS), Copenhagen, Denmark, 2016.
Abstract | Links | BibTeX | Tags: anti-roll tank, ART, CFD, free surface, ReFRESCO, URANS, verification and validation
@conference{Kerkvliet2016,
title = {Analysis of free surface anti-roll tank using URANS. Verification and validation},
author = {Kerkvliet, M., Carette, N. and Straten, O. van},
url = {http://www.marin.nl/web/Publications/Papers/Analysis-of-free-surface-antiroll-tank-using-URANS.-Verification-and-validation-1.htm},
year = {2016},
date = {2016-09-04},
booktitle = {13th International Symposium on Practical Design of Ships (PRADS), Copenhagen, Denmark},
pages = {ID055},
abstract = {To prevent excessive roll motion of ships operating in seas, damping systems are often required. Exterior systems can be used like, bilge keels or active stabilizer fins, or interior systems like anti-roll tanks (ARTs). There are mainly two sorts of ARTs, i.e. free surface tanks and Utype tanks. Both types have been studied extensively in the past, e.g. by Watts (1883), Frahm (1911) and Verhagen and Wijngaarden (1965), but also more recently, e.g. by Lee and Vassalos (1996), Kerkvliet et al. (2014) and Carette (2015). The content of this paper is restricted to the free surface type ART, which is nowadays often used to increase the roll damping of ships passively. The main advantages of such an ART are the large damping moment at small roll amplitudes and the ease to adapt the response by changing the water level. The response of the tank is highly frequency and amplitude dependent with a strong non-linear character (Carette et al., 2016). Also the shape of the interior geometry, e.g. additional struts, plates or other flow obstructions, will have an effect on the response, which makes it difficult to predict the response by analytical models. Therefore, systematic oscillation tests are often performed by model-scale experiments or by use of Computational Fluid Dynamics (CFD). This paper shows the response of a two-dimensional (2D) and three-dimensional (3D) model-scale free surface ART using the CFD code ReFRESCO (www.refresco.org). The objective of this paper is to show which issues are important when CFD is used as a research and design tool. A verification and validation study is performed to determine numerical settings to obtain a good trade-off between accuracy and computational costs. The CFD results are validated against model-scale experimental results, based on the work of Carette (2015). The results show that CFD can be used as a simulation driven design tool to accurately predict the response of an ART.},
keywords = {anti-roll tank, ART, CFD, free surface, ReFRESCO, URANS, verification and validation},
pubstate = {published},
tppubtype = {conference}
}
Toxopeus, S. L.; Bhawsinka, K.
Calculation of hydrodynamic interaction forces on a ship entering a Lock using CFD Conference
Fourth International Conference on Ship Manoeuvring in Shallow and Confined Water (MASHCON) - Ship Bottom Interaction, Hamburg, Germany, 2016.
Abstract | Links | BibTeX | Tags: bulk carrier, CFD, ReFRESCO, ROPES
@conference{Toxopeus2016,
title = {Calculation of hydrodynamic interaction forces on a ship entering a Lock using CFD},
author = {Toxopeus, S.L. and Bhawsinka, K.},
url = {http://www.marin.nl/web/Publications/Papers/Calculation-of-hydrodynamic-interaction-forces-on-a-ship-entering-a-Lock-using-CFD.htm},
doi = {10.18451/978-3-939230-38-0_34},
year = {2016},
date = {2016-05-01},
booktitle = {Fourth International Conference on Ship Manoeuvring in Shallow and Confined Water (MASHCON) - Ship Bottom Interaction, Hamburg, Germany},
pages = {6_01},
abstract = {Estimation of hydrodynamic interaction forces experienced by a ship entering a lock plays an important role in the initial design phase of the lock. These forces govern the speed at which a ship can enter the lock and also the tug requirement for facilitating such manoeuvres. Hence hydrodynamic interaction forces can influence the turnaround time and the operational cost of the locks. Traditionally these forces have been calculated using model tests or by potential flow solvers.
In this paper, a study is presented on predicting ship-lock interaction effects with the viscous-flow solver ReFRESCO. The scenario consists of a large-beam bulk carrier entering the Pierre Vandamme Lock in Zeebrugge, Belgium. To validate the predictions, existing model tests are used. Furthermore, the results are compared to potential flow computations and CFD results from literature to highlight the benefits of each approach.
The paper will show that with careful setup of the computations, reliable predictions of the ship-lock interaction effects can be obtained. In order to capture all physics of the interaction, viscous-flow computations are preferred above potential-flow predictions.},
keywords = {bulk carrier, CFD, ReFRESCO, ROPES},
pubstate = {published},
tppubtype = {conference}
}
In this paper, a study is presented on predicting ship-lock interaction effects with the viscous-flow solver ReFRESCO. The scenario consists of a large-beam bulk carrier entering the Pierre Vandamme Lock in Zeebrugge, Belgium. To validate the predictions, existing model tests are used. Furthermore, the results are compared to potential flow computations and CFD results from literature to highlight the benefits of each approach.
The paper will show that with careful setup of the computations, reliable predictions of the ship-lock interaction effects can be obtained. In order to capture all physics of the interaction, viscous-flow computations are preferred above potential-flow predictions.
2015
Prins, Henk
MARIN invests in the future as CFD takes on more prominent role Journal Article
In: MARIN Report, no. 115, pp. 12-13, 2015.
Abstract | Links | BibTeX | Tags: CFD, computer cluster, ReFRESCO
@article{Prins2015,
title = {MARIN invests in the future as CFD takes on more prominent role},
author = {Henk Prins},
url = {http://content.yudu.com/web/1r3p1/0A3a046/MR115/html/index.html?page=12},
year = {2015},
date = {2015-08-01},
journal = {MARIN Report},
number = {115},
pages = {12-13},
abstract = {To facilitate the use of reliable CFD in the design and engineering process, MARIN has invested in a new, large computer cluster, and is sharing its CFD code ReFRESCO with its customers.},
keywords = {CFD, computer cluster, ReFRESCO},
pubstate = {published},
tppubtype = {article}
}
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}
}