Numerical investigation of effect of radial vane diffuser fillet on performance of centrifugal compressor

TANG Hui; NING Fang-fei

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Numerical investigation of effect of radial vane diffuser fillet on performance of centrifugal compressor

更新时间：2026-07-07

- Numerical investigation of effect of radial vane diffuser fillet on performance of centrifugal compressor
- Vol. 27, Issue 10, (2012)
- 作者机构：
  
  北京航空航天大学能源与动力工程学院航空发动机气动热力重点实验室,北京,100191
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2012
- 稿件说明：
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TANG Hui, NING Fang-fei. Numerical investigation of effect of radial vane diffuser fillet on performance of centrifugal compressor[J]. 2012, 27(10).
DOI：

TANG Hui, NING Fang-fei. Numerical investigation of effect of radial vane diffuser fillet on performance of centrifugal compressor[J]. 2012, 27(10). DOI：

摘要

研究了单级离心压气机中径向叶片扩压器倒角对其气动性能的影响.在倒角较小时

压气机单级性能改变不大

随着倒角的增大

堵点流量降低

效率和压比下降.在此基础上

开展了优化径向叶片扩压器倒角从而提升离心压气机气动性能的研究.结果表明:在径向扩压器吸力面采用无倒角或小倒角结构

防止流量堵塞

而在压力面采用沿弦向变半径倒角结构

抑制和消除压力面存在的分离

这种结构可明显提升所研究的离心压气机的气动性能.另外

进一步研究了在轮毂和机匣处分别采用如上倒角结构对气动性能的影响

发现轮毂处变倒角对性能优化起了主要作用.

Abstract

The effect of the radial vane diffuser fillet on single-stage centrifugal compressor performance was studied.It was shown that when the radii of fillets were relatively small

the effect of the fillet can be negligible.Then further increasing the radius of the fillet

the mass flow at choke decreased and the performance of the compressor started to deteriorate.Upon these results

the investigation of optimizing the compressor aerodynamic performance by modifying the structure of the fillets was performed.Therefore

the fillet structure with no fillet or small fillets on suction side which can prevent blockage and radius-changing fillets on pressure side which can reduce or remove the separation zone on pressure surface was proposed.As a result

the performance of the compressor was improved obviously by using this structure.Besides

separated effects of fillets in casing and hub on single stage performance were discussed.It was revealed that the fillets near the hub played the major role in performance optimization.

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PIAO Ying

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Related Institution

Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics

National Key Laboratory of Science and Technology on Aero-Engines Aero-thermodynamics, School of Jet Propulsion,Beijing University of Aeronautics and Astronautics

School of Aerospace, Tsinghua University

Institute of Turbomachinery, School of Energy and Power Engineering, Xi'an Jiaotong University

National Key Laboratory on Aero-Engines, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics

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