Abstract
In this Chapter, the computations performed by all the contributors are analyzed from the point of view of the local flow analysis in order to assess the level of agreement between computations and local flow measurements and identify the sources of errors. Pure resistance with or without free-surface, hull/propeller coupling, wave diffraction or roll decay configurations are reviewed in detail. One observes a general improvement of the agreement between simulations and measurements and a strong consistency of the simulations, compared to the previous editions of this workshop. When a reasonably fine grid is employed, similar turbulence models provide similar results, independently of the code used, which illustrates the state of maturity of modern CFD methodologies. For resistance and hull/propeller coupling configurations, a detailed comparison of the best statistical turbulence models and LES or hybrid LES turbulence closures, introduced for the first time in this workshop, is conducted to identify their respective impact on local flow simulations.
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Acknowledgements
The author would like to thank Professor Lars Larsson, Professor Fred Stern and his team from the University of Iowa for their advices concerning this Chapter. Professor Shanti Bhushan (presently at Mississipi State University) should also be thanked for his personal contribution to the analysis of the test cases 3.5 and 3.6.
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Visonneau, M. (2014). Evaluation of Local Flow Predictions. In: Larsson, L., Stern, F., Visonneau, M. (eds) Numerical Ship Hydrodynamics. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-7189-5_3
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DOI: https://doi.org/10.1007/978-94-007-7189-5_3
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