【摘要】 采用拟压缩性方法、Beam－Warming近似因式分解格式数值求解三维定常不可压缩Navier-Stokes方程。采用Degani-Schiff修正的Baldwin-Lomax代数湍流模型，计算了绕尖头正切拱型旋成柱体的大迎角大雷诺数脱体涡流场。计算结果表明，在柱体头部施加微小的非对称几何扰动时，可以得到与实验相符的非对称职体涡。更多还原

【Abstract】 The method of pseudocompressibility was used in solving the three-dimensional steady incompressible Navier-Stokes flows. The solution procedure cmploys the Beam-Warming implicit approximate factorization scheme. The Baldwin-Lomax algebraic turbulent model together with the Degani-Schiff modification was used for Keynolds -averaged Navier -Stokes cquations to numerically simulate high-incidence high Reynolds number vortical flow about a tangent-ogivc cylinder. To reproduce the experimentally observed asymmetric vortices, it was found cssential to introduce a small asymmetric geometrical disturbance near the body apcx.更多还原