Adjustment of the k-ω SST turbulence model for prediction of airfoil characteristics near stall

18th International Conference PhysicA.SPb

Matyushenko, A.A.^1 ; Garbaruk, A.V.^1

Peter the Great St.Petersburg Polytechnic University, Politechnicheskaya, 29, Saint-Petersburg

195251, Russia^1

关键词: Eddy viscosity;    High Reynolds number;    Near stalls;    Prediction of aerodynamic characteristics;    Range of angles of attack;    Skin friction coefficient;    SST turbulence models;    Wall-bounded turbulent flows;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/769/1/012082/pdf
DOI  :  10.1088/1742-6596/769/1/012082

来源: IOP

【 摘 要 】

A version of k-ra SST turbulence model adjusted for flow around airfoils at high Reynolds numbers is presented. The modified version decreases eddy viscosity and significantly improves the accuracy of prediction of aerodynamic characteristics in a wide range of angles of attack. However, considered reduction of eddy viscosity destroys calibration of the model, which leads to decreasing accuracy of skin-friction coefficient prediction even for relatively simple wall-bounded turbulent flows. Therefore, the area of applicability of the suggested modification is limited to flows around airfoils.