【摘要】 采用PSPG法和SUPG法,分别在动量方程、连续性方程和能量方程的权函数中加入摄动因子以消除振荡,建立了速度和压力同次插值的三维流体流动控制方程的稳定有限元求解格式。通过比较该数值模拟方法与现有的商业分析软件Moldflow的计算结果表明,基于PG原理的三维注射成形流动数值模拟软件具有良好的精度和稳定性。更多还原

【Abstract】 The SUPG(Streamline-Upwind/Petrov-Galerkin) and PSPG(Pressure-Stabilizing/Petrov-Galerkin) formulations were employed to prevent the potential numerical instabilities achieved by adding to the weighting functions with their derivatives,thus resulting in the stabilized finite element formulations using equal-order interpolation functions for velocity and pressure.An example shows that the developed numerical algorithms perform stably and give accurate results compared with the well-known commercial software Moldflow.更多还原