Numerical study on the influence of mist-air mixtures on axial compressor performance

Ming Lele; Wu Yadong; Yang ZeyuanOuyang Hua

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Numerical study on the influence of mist-air mixtures on axial compressor performance

机译：Numerical study on the influence of mist-air mixtures on axial compressor performance

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摘要

To study the influence of mist-air mixtures on the performance of an axial-flow compressor, based on the Euler-Lagrange multiphase flow model coupled with compressor aerodynamic calculation, droplet motion, and wall film model, we establish a numerical method for compressor multiphase flow, which is used to study the performance change law of a low-pressure axial compressor with mist-air injection. The results indicate that the compressor inlet fogging will produce a wall film on the blade surface and the casing wall, resulting in a decrease in the total pressure coefficient and mechanical efficiency of the compressor under full operating conditions, and this decrease is more significant with the increase of spray water-air ratio and spray particle size. With the change of compressor mass flow, the wall film on the blade surface presents the following migration law: the thickness of wall film on the pressure surface and on the suction surface decreases and increases respectively with the increase of mass flow, and the specific distribution law of wall film on the blade surface does not change obviously. Meanwhile, a compressor inlet fogging test is carried out in this study to verify the accuracy of the multiphase flow numerical method for compressor performance prediction. The experimental results show that the numerical method can effectively and quantitatively analyze the effect of mist-air mixture injection on compressor performance, and can be further improved by more detailed experimental research to achieve a more accurate numerical method for compressor multiphase flow.(c) 2022 Elsevier Masson SAS. All rights reserved.

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《Aerospace science and technology》 |2022年第4期|107505.1-107505.17|共17页
作者
Ming Lele; Wu Yadong; Yang ZeyuanOuyang Hua;
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作者单位

Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China;

Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China|Shanghai Jiao Tong Univ, Engn Res Ctr Gas Turbine & Civil Aero Engine, Minist Educ, Shanghai, Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类
关键词
Axial compressor; Numerical method; Aerodynamic performance; Multiphase flow; Spray impingement; Wall film thickness;

Numerical study on the influence of mist-air mixtures on axial compressor performance

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