Multi-conditions aerodynamic performance optimization of a power turbine cascade

XUE Zhiheng; LI Jun; WANG Weifeng; FU Chang

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Multi-conditions aerodynamic performance optimization of a power turbine cascade

Thermal Power Generation Vol. 43, Issue 3, Pages: 9-13(2014)

更新时间：2025-09-28

- Multi-conditions aerodynamic performance optimization of a power turbine cascade
- 作者机构：
  
  1. 西安热工研究院有限公司
  2. 西安交通大学能源与动力工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK14
- Published：2014
- 稿件说明：
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XUE Zhiheng, LI Jun, WANG Weifeng, et al. Multi-conditions aerodynamic performance optimization of a power turbine cascade[J]. Thermal Power Generation, 2014, 43(3): 9-13.
DOI：

XUE Zhiheng, LI Jun, WANG Weifeng, et al. Multi-conditions aerodynamic performance optimization of a power turbine cascade[J]. Thermal Power Generation, 2014, 43(3): 9-13. DOI：

摘要

利用CFD软件NUMECA中的叶轮机械优化设计模块DESIGN-3D

对1组动力透平静叶栅在进口攻角分别为4.12°、-5.88°、-15.88°、-45.88°、-65.88°5种工况进行了气动性能优化。优化结果显示

叶栅在该5种工况下等熵效率均有所增加

总压损失均有所减小。分析叶栅叶型优化前后的流动特性

发现叶型优化后叶栅的二次流在各工况下均有所减小

并且对叶栅在大负攻角下的分离流动起到了一定抑制作用。

Abstract

Aiming at reducing the cascade total pressure loss and improving the cascade aerodynamic efficiency under constant boundary conditions and flows

optimization on aerodynamic performance of a group of stator cascades was conducted by turbomachine optimization design module Design-3D in the commercial CFD software NUMECA

with the blade incidence of 4.12°

-5.88°

-15.88°

-45.88° and -65.88°.The results show that

the cascade isentropic efficiency increased and the total pressure loss decreased under all five conditions.Analysis on flow characteristics of the cascade before and after the optimization presented that

the optimized blade reduced the secondary flow in the cascades and played a role in controlling the flow separation under large negative incidences.

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