Numerical simulation of unsteady flow in a vaneless counter-rotating turbine

QI Lei; PAN Shang-neng; LI Wei; ZOU Zheng-ping; LIU Huo-xing; ZHOU Yang

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Numerical simulation of unsteady flow in a vaneless counter-rotating turbine

更新时间：2026-07-07

- Numerical simulation of unsteady flow in a vaneless counter-rotating turbine
- Vol. 25, Issue 8, (2010)
- 作者机构：
  
  1. 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科技重点实验室, 航空发动机数值仿真研究中心,北京,100191
  2. 中国航空工业集团公司中国航空动力机械研究所,株洲,412002
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010
- 稿件说明：
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QI Lei, PAN Shang-neng, LI Wei, et al. Numerical simulation of unsteady flow in a vaneless counter-rotating turbine[J]. 2010, 25(8).
DOI：

QI Lei, PAN Shang-neng, LI Wei, et al. Numerical simulation of unsteady flow in a vaneless counter-rotating turbine[J]. 2010, 25(8). DOI：

摘要

为了掌握对转涡轮内部的复杂流动以改进航空燃气轮机的设计

利用数值模拟手段对所设计的1+1/2对转涡轮内部非定常流动进行了研究

将定常和非定常结果进行了详细的对比分析

结果表明:非定常结果与定常结果相比出功比减小

总效率约减小0.44%

流量基本不变

其中尾迹、激波、位势作用以及泄漏流等因素之间的相互作用是影响非定常特性的主要因素.

Abstract

In order to investigate the complex flow field in counter-rotating turbine and improve effectively the gas turbine design.A numerical study of unsteady flow in a vaneless counter-rotating turbine was presented in this paper.The steady and unsteady results were contrastively analyzed.It's found that the unsteady effect can decrease the specific work ratio appreciably

and increase the loss by about 0.44% efficiency points.However

the mass flow remains unchanged.The results show that the unsteady interactions from the wake

shockwave

potential field and the tip leakage flow have made great contributions to the unsteady effect.

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WANG Yan-rong

TIAN Ai-mei

MAO Ming-ming

SONG Yan-ping

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Chenghao YANG

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Related Institution

School of Energy and Power Engineering,Beijing University of Aeronautics and Astronautics

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