Numerical simulation of the influence of root slot on the static cascade performance of transonic compressor

Wenfeng XU; Hansqin MI; Dan SUN; Shilong ZOU; Wenxin LU

doi:10.3969/j.issn.2095-1248.2024.06.002

Journal of Shenyang Aerospace University >

2024 , Vol. 41 >Issue 6: 11 - 19

DOI: https://doi.org/10.3969/j.issn.2095-1248.2024.06.002

Aerospace Engineering

Numerical simulation of the influence of root slot on the static cascade performance of transonic compressor

Wenfeng XU ^,^a^,^b ,
Hansqin MI ^a ,
Dan SUN ^a^,^b ,
Shilong ZOU ^a ,
Wenxin LU ^a

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^a. College of Aero-engine, System of Liaoning Province，Shenyang Aerospace University，Shenyang 110136，China
^b. Key Laboratory of Advanced Test Technology for Aeronautical Propulsion, System of Liaoning Province，Shenyang Aerospace University，Shenyang 110136，China

Received date: 2024-04-17

Online published: 2025-02-05

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Abstract

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%.

Key words： root slot; transonic compressor; static cascade; corner separation; flow structure; numerical simulation

Cite this article

Wenfeng XU , Hansqin MI , Dan SUN , Shilong ZOU , Wenxin LU . Numerical simulation of the influence of root slot on the static cascade performance of transonic compressor[J]. Journal of Shenyang Aerospace University, 2024 , 41(6) : 11 -19 . DOI: 10.3969/j.issn.2095-1248.2024.06.002

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