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Article Dans Une Revue Journal of Marine Science and Technology Année : 2003

On the role played by turbulence closures in hull shape optimization at model and full scale

Résumé

The practical use of automated CFD-based design tools in ship-building industry requires powerful flow solvers, able to take into account realistic geometries as well as complex physical phenomena, such as turbulence. A shape optimization tool is developed in this framework. A derivative-free optimizer, yielding both flexibility and robustness, is preferred to the classical gradient-based method, more fastidious to implement and still limited to moderately complex problems. The flow solver included in the design procedure solves the incompressible Reynolds-averaged Navier-Stokes equations on unstructured grids using a finite-volume formulation, involving several near-wall low-Reynolds number turbulence models. The design tool is then applied to optimize the stern of a modern hull shape at model and full scale, different purposes being considered. Our interest is particularly focused on the influence of turbulence modeling in the design process. The effects of a two-equation model based on the eddy-viscosity assumption and a second-order closure relying on the Reynolds stress transport equations are compared.
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Dates et versions

hal-01731298 , version 1 (25-01-2022)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

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Régis Duvigneau, Michel Visonneau, Ganbo Deng. On the role played by turbulence closures in hull shape optimization at model and full scale. Journal of Marine Science and Technology, 2003, 8 (1), pp.11-25. ⟨10.1007/s10773-003-0153-8⟩. ⟨hal-01731298⟩
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