摘要
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。
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. However, for a thick airfoil, the gust response deviates from the theoretical values significantly and needs to be calculated according to requirements.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2007年第3期527-530,共4页
Acta Aeronautica et Astronautica Sinica
基金
民机预研项目
关键词
薄翼型
阵风响应
非定常计算
陡边型阵风
thin airfoil
gust response
unsteady calculation
sharp-edged gust
