separated vortex meaning in English

分离涡

There were some intensively nonlinear features in the vibrating cascade flow . the frequency of the separated vortex ' s propagation was not equal to the vibrating frequency of the blade
二维分析中发现振动叶栅非定常粘性流动具有较强的非线性特征，振动诱发的分离涡传播频率与叶片的振动频率不一致。
Finally , multi - passage method was adopted to deal with the phase - difference periodic boundary condition . when the frequency of separated vortex propagating is not the same as the vibrating frequency of blade , this method is much more reasonable than those simple phase - shifted periodic condition in single passage
最后，采用多叶栅通道计算来处理相差周期边界条件，在分离涡传播频率与振动频率不同时比其它采用简单相移条件的方法更为合理。