Moreover, flow distribution was also calculated by free-vortex flow pattern and compared with that by iso-reaction coefficient flow pattern. Relative evaluation …

同时还对自由涡流型进行了计算，把这两种流型的计算结果作了比较，并对这两种流型的风扇进行了评价。

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Then basing on the free-vortex equation, potential equation and stream function of flow are achieved by mathematical analyze, and solving these equations gives flow fields.

从自由涡运动方程出发，推导出管内流场的势函数和流函数方程，获得了管内流场的数学分析解；

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The contrast of new designed blade with the original one is made in the design of free vortex flow combining with aft-loading profile.

在自由涡与后加载叶型相结合的设计中，对新设计与原设计进行了对比。

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