【摘要】 <正> 用N-S方程直接求解分离流的工作近几年已有不少。但这种计算比较费机时,需要存储最也大。在实际应用中,边界层理论仍然是研究分离流的一种好的近似方法。本文对二维、定常、不可压层流的分离流动进行了数值分析。主要内容有:(1)从典型的以流函数表示的边界层方程出发,对分离流进行数值计算。Keller和Cebeci曾用此方程求解过附体流动的反问题。在具有相似性解的条件下,这个方程简化为著名的Falkner-Skan方程,在初始剖面,这个方程简化为Blasius方程。(2)给更多还原

【Abstract】 The numerical procedures are used to calculate a two-dimensional, steady, imcompressible laminar separated flow. The boundary layer equations in terms of streamline function are discretized into non-linear algebraic equations by means of the finite-difference method, and then those algebraic equations are solved by the relaxation method. The singularity near the point of separation is removed by specifying the wall shear distribution instead of the pressure gradient which is considered as a part of the solution. The results obtained are compared with the known solutions.更多还原