The vortices flow in the blade passages and the influence of the eccentric inlet of the multi-blade centrifugal fan for air-conditioner have been analyzed numerically by using commercial CFD code.

本文采用CFD方法，详细分析了空调用多翼离心风机叶道中的气流分布以及进气口偏心的影响。

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Vortexs are observed after the beams, which greatly influence the inlet air-flow of fan, reduces the air-flux, causes noise and wastes energy.

支承结构造成的流体绕流现象在风机进口处形成涡流，造成风机风量减少，噪声增加，浪费能源。

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The result is that from inlet to outlet of the blade channel, Axial fan blade effected on air flow is a gradually changed process of energy transmitting.

结果表明，从叶道的进口到出口，轴流通风机叶片对气流的作用是一个渐变的能量传递过程。

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