Numerical study on water film formation on aerodynamic effect of axial flow fan

HOU Shengwen; WU Feng

doi:10.13224/j.cnki.jasp.2019.10.007

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Numerical study on water film formation on aerodynamic effect of axial flow fan

更新时间：2026-07-07

- Numerical study on water film formation on aerodynamic effect of axial flow fan
- Vol. 34, Issue 10, Pages: 2140-2148(2019)
- 作者机构：
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- DOI：10.13224/j.cnki.jasp.2019.10.007
  CLC：
- Published：2019
- 稿件说明：
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侯圣文, 吴锋. 水膜形成对轴流风扇气动影响的数值研究[J]. 航空动力学报, 2019, 34(10): 2140-2148.

doi: 10.13224/j.cnki.jasp.2019.10.007
侯圣文, 吴锋. 水膜形成对轴流风扇气动影响的数值研究[J]. 航空动力学报, 2019, 34(10): 2140-2148. DOI： 10.13224/j.cnki.jasp.2019.10.007.

doi: 10.13224/j.cnki.jasp.2019.10.007 DOI：

摘要

为了研究水膜对风扇气动特性的影响

综合水滴碰撞壁面的参数

应用水膜方程求得叶片表面水膜方均根厚度。在数值计算中引入砂砾粗糙度模型来模拟水膜引起的叶片表面粗糙度变化。针对不同吞雨量和水滴直径条件开展数值计算。计算结果表明：水膜主要分布在叶片压力面中的前缘和叶根区域

其厚度和沉积面积随着吞雨量的增加而增大

并且水膜的存在会导致风扇压比和温比的降低。例如

当水滴直径为1000μm、吞雨量为5%时

水滴沉积面积为0.0758m2

占叶片压力面总表面积的33.91%。

Abstract

In order to study the effect of water film on aerodynamic charactristics of the fan

the mean square thickness of water film on blade surface was calculated by using water film equation combined with the parameters of the water droplets colliding with the wall surface. Then the sand grain roughness model was added to the numerical calculation to simulate the change of blade surface roughness caused by water film. Fan blades were numerically simulated under different rain ingestion rates and water droplet diameters. Results indicate that water film mainly distributes in the leading edge and root region of blade pressure surface. The water film’s thickness and depositional area are positively correlated with rain ingestion rate. In addition

the existence of water film can reduce the pressure ratio and temperature ratio of the fan. When the average diameter of the water droplet is 1000μm and the rain ingestion rate is 5%

thewater droplet depositionalarea is 0.0758m2

accounting for 33.91% of the pressure surface area of the blade.

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Related Institution

China Gas Turbine Establishment, Aviation Industry Corporation of China, Jiangyou Sichuan

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School of Mathematics and Computational Science，Hunan University of Science and Technology

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