【摘要】 为解决在非交错网格上求解不可压 N- S方程遇到的压力波动问题 ,将一种完全压力校正方法推广到三维非正交曲线坐标系中 .该方法的校正压力由质量守恒项和压力平滑项组成 .对带有移动顶盖的三维方腔层流和 90°方截面弯管层流流动问题的数值模拟结果表明 ,该方法准确可靠 ,程序编制简易 ,计算效率明显提高更多还原

【Abstract】 In order to cure the pressure fluctuation encountered in solving N S equations on a nonstaggered grid, a complete pressure correction method was extended for the solution of incompressible flow in 3 D non orthogonal curvilinear coordinate. The correction pressure of the method comprises two components: a mass conserving component and a smoothing one. The numerical simulation results of the laminar flows in 3 D cavity with moving top lid and in 90° crooked pipe prove that the new pressure correction procedure is not only valid and reliable but also greatly simplifies the computer coding and improves the efficiency.更多还原