薄翼型阵风响应的数值模拟

 采用有限体积法来数值求解非定常Euler和N-S方程，并在非定常计算中通过引入“网格速度”来计入阵风的影响，实现了对刚性薄翼型阵风响应的有效数值模拟。采用该方法来对薄翼型迎角突然增大的阵风、陡边型阵风这两种典型阵风情况下的翼型气动力响应进行了计算，结果表明：计算结果与现有的一些理论结果都符合较好，与文献中计算结果也吻合。同时通过计算也表明厚翼型的阵风响应需根据工况开展进一步的计算分析。

Numerical Simulation of Gust Response for Thin Airfoil

By solving the unsteady Euler/Navier-Stokes equation with finite volume method and incorporating the grid velocity to take account of the gust influence, the gust response on a rigid thin airfoil is effectively calculated. After applying this method to simulate two typical cases, i.e., gust leading a step change in airfoil’s angle of attack and the sharp-edged gust, it is shown in results that the calculated lift responses of the airfoil agree well with both the exact theoretical values and the calculated values in references.