Thus the difficulties of discontinuous velocity gradient and the stress singularity at the exit point are avoided, and the expense of computation is reduced.
这样回避了速度梯度间断的困难，缓和了出口处应力奇性引起的矛盾，同时又减少了计算量。
2
In the point of view of meso - mechanics, the multi-zone boundary element method is used to analyze the behavior of the discontinuous system.