多段翼型襟翼滑动非定常粘性流数值模拟  

Numerical Simulation of Usteady Flows over Gliding Flap of Multi-element Airfoils

作　　者：付艳丽[1] 李孝伟[1] 

机构地区：[1]上海大学上海市应用数学和力学研究所,上海200072

出　　处：《上海大学学报（自然科学版）》2009年第4期394-398,共5页Journal of Shanghai University:Natural Science Edition

基　　金：国家自然科学基金资助项目(10672097)

摘　　要：运用动态嵌套网格技术和双时间推进算法,对多段翼型襟翼滑动的非定常粘性流进行数值模拟和研究.计算定常情况下的压力分布,并与实验数据进行对比,验证数值方法的实用性.同时对非定常情况进行数值研究,分析襟翼在不同的滑动速度下,幅度和频率对多段翼型的阻力、升力和力矩产生的影响.得到的结果对襟翼运动形式的设计具有一定的借鉴意义.Unsteady viscous flows over gliding flap of multi-element airfoils are simulated and studied by using moving overlapped grids and the dual-time stepping method. In order to verify the numerical method, pressure distributions of multi-element airfoils in a steady case are calculated and compared with experimental data. Effects of oscillation amplitudes and frequencies on drags, lifts and moments of the multi-element airfoils are analyzed with unsteady simulations for different gliding velocity of the flap. The obtained results are useful in the design of motion of the flap.

关 键 词：动态嵌套网格 双时间推进算法 Navier—Stokes方程 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]