Secondary flow analysis for non-axisymmetric endwall on the high-load compressor cascade

WU Ji-chang; LU Xin-gen; ZHU Jun-qiang

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Secondary flow analysis for non-axisymmetric endwall on the high-load compressor cascade

更新时间：2026-07-07

- Secondary flow analysis for non-axisymmetric endwall on the high-load compressor cascade
- Vol. 26, Issue 6, (2011)
- 作者机构：
  
  1. 中国科学院工程热物理研究所,北京,100190
  2. 中国科学院研究生院,北京,100190
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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WU Ji-chang, LU Xin-gen, ZHU Jun-qiang. Secondary flow analysis for non-axisymmetric endwall on the high-load compressor cascade[J]. 2011, 26(6).
DOI：

WU Ji-chang, LU Xin-gen, ZHU Jun-qiang. Secondary flow analysis for non-axisymmetric endwall on the high-load compressor cascade[J]. 2011, 26(6). DOI：

摘要

探讨了高负荷压气机叶栅中应用非轴对称端壁的有效性.首先利用NUMECA/Design3D优化软件包来完成了对端壁的优化

然后推导并建立了高负荷压气机叶栅出口含全部掺混损失的二次流损失的计算方法

最后在设计攻角和非设计攻角下对轴对称端壁和非轴对称端壁结构的高负荷压气机叶栅内部及出口流场进行了详细的分析.分析结果表明:在设计攻角和非设计攻角下采用非轴对称端壁均能改变端壁附近载荷分布、降低叶片通道的二次流动损失;在设计攻角下使叶栅周向质量平均总压损失减少约为9.4%

在非设计攻角(±3°)下分别减损7.7%和11.8%;当非轴对称端壁幅值为4%叶高时

二次流动损失最小.

Abstract

The effectiveness of a non-axisymmetric endwall on a high-load compressor cascade was discussed.First of all

the trigonometric function was used to complete non-axisymmetric endwall profiling.Then the method of calculating the mixed-out secondary loss for the compressor cascade was established.Finally

the detailed numerical simulations were conducted on the cascade flow field with non-axisymmetric hub endwall.Numerical results show that with the non-axisymmetric hub endwall

the loading distribution near the endwall would be changed and the secondary loss would be reduced in both the design and off-design condition.It has been indicated that the mass average total pressure loss can decrease by 9.4% in the design and by 7.7% and 11.8% in the off-design condition(±3°)

respectively.When the non-axisymmetric contour height equals to be 4% of blade span

the secondary flow loss should be the lowest.

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