【摘要】 不可压缩粘性流体Naver-Stokes方程SIMPLE算法求解中压力修正方程起着很关键的作用,但其边界处理的特殊性常给正确应用带来一定困难. 提出从连续性方程本质出发确定压力修正方程边界条件的新方法.通过对二维层流流动的计算分析表明了该方法的正确性,并探讨了压力修正方程边界条件不同处理对流场计算结果的影响更多还原

【Abstract】 Solution of pressure correction equation plays a key role in SIMPLE algorithm for Navier Stokes equations.But for the equation is not one of the basic governing equations,its boundary conditions(BCs) cannot be determined by the problem itself,which makes the application difficult.The paper presents a new method,based on the essence of continuity equation,to specify the BCs for pressure correction equation.Calculation results and compartisons of two dimensional laminar flows have demonstrated the effectiveness and accuracy of the new approach,and furthermore the influence of the BCs on the convergence rate has been reviewed.更多还原