大家好,我正在用间断有限元法求解一个后台阶问题,参考文献中说关于上下边界用Neuman
n边界条件,而且我也询问过文献的作者本人,他说Neumann边界的意思就是:at the Gaussian
points on the boundary edges, the trace of the numericalsolution from outside
the computational domain is set to the same of thatfrom inside the computational domain.
但我还是没弄明白,上面这句话的意思是否是说用内点外推.还请大家帮忙.