变Courant数在局部隐式有限元法中的应用

Application of Alternative Courant Number to Locally Implicit Finite Element Method

本文局部隐式有限元法是流场数值模拟的一种新的数值计算方法,这种数值计算方法受到初场、边界条件、几何形状等的影响,使稳定性下降。采用一种变Courant数方法,使局部隐式有限元法在提高收敛速度的同时增强了稳定性。这种应用于局部隐式有限元法的变Courant数方法在计算的过程中在保证稳定的同时不断加大Courant数来加快收敛,经应用效果明显。

The alternative Courant number is applied to the locally implicit finite element method. A new algorithm for the simulation of flow field to increase the convergence rate and to improve the stability.