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Hybrid RANS/LES simulations of a cavitating flow in Venturi

Abstract : A numerical investigation of the behaviour of a cavita-tion sheet developing along a Venturi geometry has been performed using a compressible one-fluid RANS solver. The interplay between turbulence and cavitation regarding the unsteadiness and the structure of the flow is complex and not well understood. This constitutes a determinant point to accurately simulate the dynamic of sheet cavities. Various turbulent approaches are tested: a new Scale-Adaptive model (SAS) and the Detached Eddy Simulation (DES). 3D simulations are compared with the experimental data. An oblique mode of the sheet is put in evidence.
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Submitted on : Monday, March 2, 2020 - 4:24:56 PM
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  • HAL Id : hal-00853824, version 1




Jean Decaix, Eric Goncalvès da Silva. Hybrid RANS/LES simulations of a cavitating flow in Venturi. International Symposium on Turbulence and Shear Flow Phenomena, Aug 2013, Poitiers, France. pp.1-6. ⟨hal-00853824⟩



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