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应用DES(detached eddy simulation)方法研究了SC(2)-0714超临界翼型跨声速自维持激波振荡现象.使用的DES方法预测了激波在翼型上表面的周期性运动,分析了雷诺数对激波运动的减缩频率、平均激波位置、脉动压力系数等非定常特性的影响.结果表明:雷诺数对激波振荡运动特性的影响呈非线性关系;而雷诺数为6×106时的激波振荡运动特性与雷诺数分别为15×106及30×106时的特性存在明显差异.
The detached eddy simulation (DES) method was used to study the transonic self-sustaining shock oscillation of the SC (2) -0714 supercritical airfoil. The DES method was used to predict the periodic motion of the shock on the upper surface of the airfoil. The results show that the Reynolds number has a nonlinear relationship with the oscillatory motion of the shock wave, while the Reynolds number is 6 × 106 The characteristics of shock oscillation and Reynolds numbers are 15 × 106 and 30 × 106, respectively.