大连海事大学学报 >
2017 , Vol. 43 >Issue 4: 74 - 80
DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2017.04.011
变冲角对高负荷扇形扩压叶栅性能影响的数值研究
收稿日期: 2017-05-04
修回日期: 2017-05-31
网络出版日期: 2017-06-07
基金资助
国家自然科学基金资助项目（51676023；51436002）；辽宁省自然科学基金资助项目（201602078）；中央高校基本科研业务费专项资金资助项目（3132017011）.
Numerical study of the influence of varying incidences on highly-loaded sectorial compressor cascade performance
Received date: 2017-05-04
Revised date: 2017-05-31
Online published: 2017-06-07
陆华伟 , 张海鑫 , 付星豪 , 郑雨晨 , 钟兢军 . 变冲角对高负荷扇形扩压叶栅性能影响的数值研究[J]. 大连海事大学学报, 2017 , 43(4) : 74 -80 . DOI: 10.16411/j.cnki.issn1006-7736.2017.04.011
In order to study the performance of a compressor under variable working conditions, the influence of varying incidences on aerodynamic performance of sectorial cascade in a subsonic highly-loaded sectorial compressor cascade was studied by using numerical simulation method. Results show that the separation and secondary flow of boundary layer and the interaction of complex vortex system in corner cause severe loss. The loss in lower corner is always more serious than that of upper corner, and the loss difference will aggravate with the increase of incidence. The total loss of cascade decreases first and then increases, and reaches minimum in -6° incidence. With the increase of incidence, the low pressure region in cascade and the separation on suction surface are all ahead of time, and the back-flow in corner is also enhanced. The intensity and the enhancement rate of back-flow in lower corner are larger than that in upper corner.
Key words： varying incidences; subsonic; highly-loaded; sectorial compressor cascade
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