Turbulence modeling for free-surface flow simulations in offshore applications
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...
| Main Authors: | , , , , , |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
2015
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| Subjects: | |
| Online Access: | https://hdl.handle.net/11370/86913a70-4950-45c4-889e-912816b4d370 https://research.rug.nl/en/publications/86913a70-4950-45c4-889e-912816b4d370 http://www.globaleventslist.elsevier.com/ |
| Summary: | 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. |
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