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Time‐dependent simulation of cavitating flow with k − ℓ turbulence models
Author(s) -
Decaix Jean,
Goncalvès Eric
Publication year - 2011
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/fld.2601
Subject(s) - turbulence , venturi effect , k epsilon turbulence model , cavitation , k omega turbulence model , mechanics , solver , scale (ratio) , reynolds number , turbulence modeling , compressibility , flow (mathematics) , computational fluid dynamics , statistical physics , physics , direct numerical simulation , reynolds stress equation model , mathematics , mathematical optimization , engineering , mechanical engineering , quantum mechanics , inlet
SUMMARY A compressible, multiphase, one‐fluid Reynolds‐averaged Navier–Stokes solver has been developed to study turbulent cavitating flows. The interplay between turbulence and cavitation regarding the unsteadiness and structure of the flow is complex and not well understood. This constitutes a critical point to accurately simulate the dynamic behavior of sheet cavities. In the present study, different formulations based on a k − ℓ transport‐equation model are investigated and a scale‐adaptive formulation is proposed. Numerical results are given for a Venturi geometry and comparisons are made with experimental data. The scale‐adaptive model shows several improvements compared with standard turbulence models. Copyright © 2011 John Wiley & Sons, Ltd.