Research on Computational Method for the Unsteady Wake Influence on Turbine Blade Surface Heat Transfer Characteristics

ZHANG Zheng; ZHU Huiren; ZHANG Li; YAO Chunyi; XU Zhipeng; XUE Shulin; LI Yaxiong

doi:10.19805/j.cnki.jcspe.2025.240217

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Research on Computational Method for the Unsteady Wake Influence on Turbine Blade Surface Heat Transfer Characteristics

更新时间：2026-10-10

- Research on Computational Method for the Unsteady Wake Influence on Turbine Blade Surface Heat Transfer Characteristics
- Chinese Journal of Power Engineering Vol. 45, Issue 6, Pages: 828-834(2025)
- 作者机构：
  
  1. 西北工业大学动力与能源学院,陕西,西安,710072
  2. 中国航发湖南航空动力机械研究所,湖南,株洲,412002
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.240217
  CLC： TK14;TK124
- Online First：16 June 2025，
  
  Published：2025
- 稿件说明：
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张正,朱惠人,张丽,姚春意,徐志鹏,薛树林,李亚雄. 尾迹影响涡轮叶片表面换热特性的算法研究动力工程学报, 2025, 45(6): 828-834 https://doi.

org/10.19805/j.cnki.jcspe.2025.240217
张正,朱惠人,张丽,姚春意,徐志鹏,薛树林,李亚雄. 尾迹影响涡轮叶片表面换热特性的算法研究动力工程学报, 2025, 45(6): 828-834 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240217.

org/10.19805/j.cnki.jcspe.2025.240217 DOI：

摘要

在涡轮发动机叶栅通道内引起不稳定流的主要因素之一便是上游叶片尾迹的传播

尾迹将使得涡轮叶片表面上不稳定的层流向湍流边界层过渡

从而导致转捩提前。从边界层转捩理论的角度入手

预测了尾迹对叶片表面换热特性的影响。首先

引入尾迹诱导时间平均间歇因子修正湍流间隙因子;其次

采用相平均湍流度预测尾迹诱导下转捩起始点;最后

引入尾迹产生的湍流黏性系数修正叶片层流区有效黏性系数。结果表明:尾迹影响换热特性的算法研究与改进在相关实验系统上得到较好的验证

显著提高了尾迹影响下的换热计算精度。

Abstract

One of the main factors causing unstable flow in the turbine cascade channel is the propagation of upstream blade unsteady wake. The unsteady wake advances the transition from unstable laminar flow to turbulent boundary layer on the surface of turbine blades

leading to an earlier transition. The influence of unsteady wakes on the surface heat transfer characteristics of turbine blades was predicted based on boundary layer transition theory. Firstly

the unsteady wake-induced time-averaged intermittency factor was introduced to correct the turbulence intermittency factor. Secondly

the phase-averaged turbulence intensity was used to predict the onset of transition induced by the unsteady wake. Finally

the turbulent viscosity coefficient generated by the unsteady wake was introduced to correct the effective viscosity coefficient in the laminar region of the blade. Results show that the computational method and improvement for the unsteady wake influence on turbine blade surface heat transfer characteristics have been well validated in relevant experimental systems

significantly improving the accuracy of heat transfer calculations under the unsteady wake influence.

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references

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