三角翼大迎角不可压粘流的数值模拟

NUMERICAL SIMULATION OF INCOMPRESSIBLE VISCOUS FLOW OVER A DELTA WING AT HIGH ANGLE OF ATTACK

研究了人工压缩法拟压缩性系数β的选取，采用函数形式的β有效地加速了收敛过程．采用求解不可压Ｎ－Ｓ方程，对三角翼大迎角绕流进行了数值模拟，得到了与实验吻合很好的结果．

The choice of the pseudo compressiblility parameter β is investigated and a function form of β which accelerates the convergence effectively is presented. The numerical simulation of vortical flow about a 70° delta wing is made by solving the incompressible Navier Stokes equations. The agreement of calculated results with the experimental data is favourable. The physical aspects of vortical flow of the delta wing at high angles of attack are analysed.