In this paper, the free-surface modelling in MARIN’s URANS code FreSCo is analysed and tested. FreSCo is a finite-volume code using a two-phase Volume-Of-Fluid approach to handle free-surfaces. After a description of code and method, attention is paid to wave generation and propagation. More specifically, the objective of this study is to assess if the code can model correctly travelling waves of 2nd order Stokes type and what it requires to do so with a quality needed for engineering purposes. Analysis of the effect of numerical schemes and of discretisation errors (via grid-refinement studies) is reported. Dispersion and diffusion errors are quantified by comparison with analytical solutions. Furthermore, two typical benchmark free-surface problems, viz. a 3D Dam-breaking flow and the Duncan foil test case, are used to illustrate the current capabilities of FreSCo. The results are validated against experiments and numerical data available in the literature. The results here shown indicate that FreSCo comes up to expectation, but also that issues such as compressive convection schemes and non-reflective boundary conditions require further research.
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ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering
May 31–June 5, 2009
Honolulu, Hawaii, USA
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4345-1
PROCEEDINGS PAPER
Free-Surface Viscous Flow Computations: Validation of URANS Code FreSCo Available to Purchase
Guilherme Vaz,
Guilherme Vaz
MARIN, Wageningen, The Netherlands
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Frederick Jaouen,
Frederick Jaouen
MARIN, Wageningen, The Netherlands
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Martin Hoekstra
Martin Hoekstra
MARIN, Wageningen, The Netherlands
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Guilherme Vaz
MARIN, Wageningen, The Netherlands
Frederick Jaouen
MARIN, Wageningen, The Netherlands
Martin Hoekstra
MARIN, Wageningen, The Netherlands
Paper No:
OMAE2009-79398, pp. 425-437; 13 pages
Published Online:
February 16, 2010
Citation
Vaz, G, Jaouen, F, & Hoekstra, M. "Free-Surface Viscous Flow Computations: Validation of URANS Code FreSCo." Proceedings of the ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. Volume 5: Polar and Arctic Sciences and Technology; CFD and VIV. Honolulu, Hawaii, USA. May 31–June 5, 2009. pp. 425-437. ASME. https://doi.org/10.1115/OMAE2009-79398
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