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采用具有TVD性质的三队精度Godunov格式，对均匀加载叶型及后部加载叶型所构成的叶栅在不同弯角下的流场进行了数值模拟。详细研究了叶片弯曲后对通道涡截面拓扑结构的影响。发现叶片正弯后有利于使通道涡在结构上变得稳定；同时也指出；与常规叶片相比，二次流损失较小的后部加载叮型所构成的叶栅内的通道涡在结构上较为稳定。本文进一步分析了通道涡结构的改变对损失的影响；并指出使通道涡在结构上变得稳定的边界条件可能有助于减少二次流损失。
The three-team accuracy Godunov format with TVD property was used to simulate the flow fields of cascades with uniform loading and rear loading profiles under different bending angles. The effect of blade bending on the topological structure of channel vortices is studied in detail. It is found that the vortices are stable in structure when they are bent forward. It is also pointed out that compared with the conventional vanes, the vortices in the cascade formed by the rear-loading jets with less secondary flow losses are more stable in the structure On the more stable. This paper further analyzes the influence of the change of the vortex structure on the loss, and points out that the boundary conditions that make the vortex structure stable can be helpful to reduce the secondary loss.