The flow visualization by means of smoke and measurement of 3 -d flow field are conducted to investigate physical model of the streamwise corner vortexes in a compressor cascade.

本文采用烟显示和三维流场测量的方法，研究扩压叶栅角涡的物理模式。

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A 2-d tidal flow mathematical model of Xinghua Bay based on irregular triangular grid finite difference method was set up and numerical simulation of tidal flow field was carried out.

建立了基于不规则三角形网格有限差分法的兴化湾二维潮流数学模型，对兴化湾潮流场进行了数值模拟。

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The 2-d model with a fine grid is applied to the field of flow in the Changjiang Estuary and the results are well in agreement with the measured flow.

不仅如此，本文还采用精细网格下的平面二维模型对长江口流场进行模拟，获得与实际流动较为一致的结果。

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