Steady-State Evaluation of 'Two-Equation' RANS (Reynolds-averaged Navier-Stokes) Turbulence Models for High-Reynolds Number Hydrodynamic Flow Simulations
نویسندگان
چکیده
This report presents an evaluation of the steady-state capability of the turbulence models available in the commercial CFD code FLUENT 6.0, for their application to the simulation of hydrofoil turbulent boundary layer separation at high-Reynolds numbers. Four widely applied two-equation RANS turbulence models were qualitatively and quantitatively assessed through comparison with high-quality experimental data at Reynolds numbers of 8.284 ́106 and 1.657 ́107. The turbulence models evaluated were the Standard k-e model, the Realisable k-e model, the Standard k-w model and the Shear-Stress-Transport (SST) k-w model. It was concluded that the Realisable k-e turbulence model used with enhanced wall functions and near-wall modelling techniques, consistently provided superior performance in predicting the hydrofoils performance parameters and flow characteristics. RELEASE LIMITATION Approved for public release Published by DSTO Platform Sciences Laboratory 506 Lorimer St. Fishermans Bend, Victoria 3207 Australia Telephone: (03) 9626 7000 Fax: (03) 9626 7999 © Commonwealth of Australia 2004 AR-013-055 March 2004 APPROVED FOR PUBLIC RELEASE Steady-State Evaluation of 'Two-Equation' RANS (Reynolds-averaged Navier-Stokes) Turbulence Models for High-Reynolds Number Hydrodynamic Flow Simulations
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