1 研究方法和对象
1.1 研究对象
1.2 数值计算方法及网格无关性验证
2 结果与讨论
2.1 叶根通槽宽度对叶栅气动性能的影响
2.2 叶根通槽高度对叶栅气动性能的影响
表 3 不同方案叶根通槽的高度 |
方案 | 叶根通槽宽度 w |
---|---|
8 | 2%H |
9 | 3%H |
10 | 4%H |
11 | 5%H |
12 | 6%H |
13 | 7%H |
14 | 8%H |
徐文峰(1993-),男,辽宁庄河人,讲师,博士,主要研究方向:航空发动机气动热力学, E-mail:xuwf 789@163.com。 |
收稿日期: 2024-04-17
网络出版日期: 2025-02-05
基金资助
国家自然科学基金(52075346)
辽宁省大学生创新创业训练计划支持项目(S202310143038)
沈阳航空航天大学引进人才科研启动基金(23YB20)
Numerical simulation of the influence of root slot on the static cascade performance of transonic compressor
Received date: 2024-04-17
Online published: 2025-02-05
徐文峰 , 米瀚沁 , 孙丹 , 邹世龙 , 鲁文昕 . 叶根通槽对跨声速压气机静叶叶栅性能影响的数值仿真[J]. 沈阳航空航天大学学报, 2024 , 41(6) : 11 -19 . DOI: 10.3969/j.issn.2095-1248.2024.06.002
In order to investigate the influence of root slot on the static cascade performance of transo-nic compressor, the high-load diffusion cascade model NACA65-K48 was used as the basis and the influences of root slot with different width and height on the aerodynamic performance and flow structure of the compressor cascade were studied through numerical simulation. The results show that the root slot can effectively weaken the vortex strength on the suction surface, suppress the corner separation along both the pitch and blade height directions, and reduce the flow loss of the cascade. The inhibitory effect firstly increases and then decreases with the increase of the slot width, and it shows a similar trend with the rise in the height. When the width is 12% chord and the height is 5% blade height, the root slot structure of the blade has the most significant effect on improving the flow within the slot, reducing the cascade flow loss by 11.19%.
表 3 不同方案叶根通槽的高度 |
方案 | 叶根通槽宽度 w |
---|---|
8 | 2%H |
9 | 3%H |
10 | 4%H |
11 | 5%H |
12 | 6%H |
13 | 7%H |
14 | 8%H |
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