To study extreme hydrodynamic wave impact in offshore and coastal engineering, the VOF-based CFD simulation tool ComFLOW is being developed. Recently, much attention has been paid to turbulence modeling, local grid refinement, wave propagation and absorbing boundary conditions. Here we will focus on the design of the turbulence model, which should be suitable for the coare grids as used in industrial applications. Thereto a blend of a QR-model and a regularization model has been designed, in combination with a dedicated wall model. The QR-model belongs to a class of modern eddy-viscosity models, where the amount of turbulent eddy viscosity is kept minimal. The performance of the model will be demonstrated with several applications relevant to the offshore industry. For validation, experiments have been carried out at MARIN.
Turbulence Modeling for Free-Surface Flow Simulations in Offshore Applications
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van der Heiden, HJL, Veldman, AEP, Luppes, R, van der Plas, P, Helder, J, & Bunnik, T. "Turbulence Modeling for Free-Surface Flow Simulations in Offshore Applications." Proceedings of the ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. Volume 2: CFD and VIV. St. John’s, Newfoundland, Canada. May 31–June 5, 2015. V002T08A022. ASME. https://doi.org/10.1115/OMAE2015-41578
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