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Seventh International Symposium on Turbulence and Shear Flow Phenomena
July, 28-31, 2011, Ottawa Convention Centre, Ottawa, Canada

DOI: 10.1615/TSFP7

NUMERICAL PREDICTION OF TRANSONIC BUFFETING BY MEANS OF STANDARD AND TIME-DEPENDENT TURBULENT MODELS

pages 1-6
DOI: 10.1615/TSFP7.1890
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Краткое описание

We present the preliminary results from a numerical investigation of transonic buffeting on an OAT15A airfoil using the two-equation transport models k-ω SST and k-ε with low-Re corrections by means of damping functions. The influence of the turbulence model, the transition and 3D configurations onto the physics of the buffeting are presented. Even though shock-induced oscillations are observed, some discrepancies with experimental results are found. A refined model of turbulent viscosity, based on a semi-deterministic approach, is proposed and is currently implemented in the computational software and used in order to improve the buffeting prediction.

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