网格自适应策略在高升力构型计算中的应用

提出了一种基于多尺度网格误差分析的新型混合网格自适应局部加密策略。在初始网格基础上,通过多重网格计算,比较次细网格和细网格的计算结果,揭示出网格敏感区域,然后对这些网格敏感区域加密,计算自适应加密后的网格得到最终计算结果。相比于常规网格自适应策略,提出的新策略特别适合多种流动现象并存的高升力构型绕流流场计算中的敏感区域判断。NASA高升力全展构型的数值试验充分表明这种新策略的有效性。

Application of New Grid Adaptation Strategy on High Lift Configuration

A new grid adaptation strategy based on multiscale grid error estimation is presented.By the information obtained in the full multigrid calculation on initial grid,we can quickly explore the critical local regions by comparing the solution of coarser and the fine grid,and then those regions are refined to generate the final grid and therefore the final computation is conducted on it.Other than conventional grid adaptation strategies,our strategy especially suit for the numerical simulation of high-lift configuration where several kinds of flow phenomena exist.The numerical experiments of NASA high-lift full-span configuration strongly show the efficient of our grid adaptation strategy.