Study on Flow Fields and Losses of the Stationary Components in an Axial Flow Fan

梁亚勋; 李景银; 田华

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Study on Flow Fields and Losses of the Stationary Components in an Axial Flow Fan

更新时间：2025-12-08

- Study on Flow Fields and Losses of the Stationary Components in an Axial Flow Fan
- Vol. 42, Issue 3, Pages: 269-272(2008)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK432
- Online First：10 March 2008，
  
  Published：2008
- 稿件说明：
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梁亚勋, 李景银, 田华. Study on Flow Fields and Losses of the Stationary Components in an Axial Flow Fan[J]. 2008, 42(3): 269-272.
DOI：

梁亚勋, 李景银, 田华. Study on Flow Fields and Losses of the Stationary Components in an Axial Flow Fan[J]. 2008, 42(3): 269-272. DOI：

摘要

采用三维黏性流场数值分析方法

对轴流风机的静止部件分别进行了单独和整机条件下的数值计算.对2种情况下各静止部件流场和损失的变化进行了分析.结果发现:集流器的损失较大

其效率与扩散筒的效率相当

设计中必须加以考虑; 与各个静止部件单独计算时相比较

在整机计算条件下风机的扩散筒和扩散塔的流场相互干涉比较严重

导致内部流场状况较差

流动损失增大; 该扩散塔的出口速度分布非常不均匀

低速区面积太大

值得改进.

Abstract

By using 3-D viscous flow solvers

the numerical simulation was carried out to investigate the flow fields and losses in stationary part of an axial flow fan. By studying the variations of the flow fields and losses of the stationary components at isolated conditions and in the fan's assembly

it is found that the losses in the collector is large

and its efficiency is almost the same as the diffuser's

therefore its losses should be taken into account in the design. Secondly

the losses of the diffuser and diffusing tower increase in the fan's assembly compared with those at isolated condition

which means that the interference between them is strong and leads to worse flow fields. Finally

the flow fields at the exit of the diffusing tower are very uneven

and there exists a large area of low velocity

leading to a decrease of the static efficiency of the fan. An improvement should be made.

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references

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