Wall model and mesh influence study for partial cavities

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• 作者：Eric Goncalv&egrave ; s ; ^{Eric.Goncalves@legi.grenoble-inp.fr} ; Jean Decaix
• 关键词：Cavitation ; Homogeneous model ; RANS simulations ; Wall functions ; Turbulence model
• 刊名：European Journal of Mechanics - B/Fluids
• 出版年：2012
• 出版时间：January-February 2012
• 年：2012
• 卷：31
• 期：Complete
• 页码：12-29
• 全文大小：2320 K

文摘

This numerical work investigates the mesh influence in the near-wall area when a partial cavity develops and interacts with the turbulent boundary layer. Different meshes varying by the first cell size are compared, and unsteady simulations are performed with a two-phase one-fluid RANS solver. Numerical results are given for two Venturi geometries (quasi stable and unstable behaviour) and comparisons are made with experimental data.