DLR-F11高升力构型的数值模拟

Numerical Simulation of DLR⁃F11 High⁃lift Configuration

基于国家数值风洞(NNW)风雷软件(PHengLEI),针对AIAA第二届高升力会议DLR-F11全机构型开展气动特性数值模拟,以评估软件对复杂高升力外形低速流动模拟能力。研究内容主要包括网格收敛性分析、雷诺数影响分析,以及缝翼滑轨和襟翼滑轨整流罩影响分析。通过与试验结果、其他参考值对比分析表明:对高升力外形,软件在线性段的计算结果具有较高可信度,在失速迎角附近的模拟结果也与参考值相当,在考虑滑轨和滑轨整流罩等复杂构型后,也能正确捕捉到关键分离流动特征。

In order to evaluate the simulation capability of the National Numerical Wind⁃tunnel CFD software PHengLEI for subsonic flows over the complex high lift configuration,the 2nd AIAA High⁃Lift Prediction Workshop DLR⁃F11 configuration is selected and simulated.The grid convergence analysis,the Reynolds number effects and the influence of the slat track as well as the flap track faring are presented.The comparison with the experimental data and reference values indicates that the results have good credibility and validity in the linear segment before stall,and the results near angle of stall agree well with reference values.With the additional components of the slat track and the flap track fairing,separated flow features on the wing can be correctly captured.