Experimental Study on Cooling Performance of a High Temperature Turbine Blade

ZHAO Zhen; GAO Jianmin; XU Liang; XI Lei; LI Yunlong

doi:10.7652/xjtuxb202401005

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Experimental Study on Cooling Performance of a High Temperature Turbine Blade

更新时间：2025-05-13

- Experimental Study on Cooling Performance of a High Temperature Turbine Blade
- Vol. 58, Issue 1, Pages: 54-67(2024)
- 作者机构：
  
  西安交通大学机械制造系统工程国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202401005
  CLC： TK172
- Online First：10 January 2024，
  
  Published：2024
- 稿件说明：
移动端阅览
ZHAO Zhen, GAO Jianmin, XU Liang, et al. Experimental Study on Cooling Performance of a High Temperature Turbine Blade[J]. 2024, 58(1): 54-67.
DOI：

ZHAO Zhen, GAO Jianmin, XU Liang, et al. Experimental Study on Cooling Performance of a High Temperature Turbine Blade[J]. 2024, 58(1): 54-67. DOI： 10.7652/xjtuxb202401005.

摘要

为了有效监测高温涡轮叶片的安全运行状态

基于响应面模型对某型高温涡轮叶片进行了实验研究

旨在探究关键工况参数对其冷却性能的影响

以提供可靠的数据支持。采用中心复合表面设计对某型叶片的工况参数进行设计

研究了主流入口温度、主流出口压力、主流进出口压比、冷气与主流温度比及流量比对某型叶片冷却效率分布、无量纲温度分布及温度非均匀度的影响规律

并在此基础上构建了响应面模型

探究了工况参数的耦合作用对某型叶片冷却性能的综合影响。实验结果表明:拟合得到的响应面模型有较高的精度

其均方根误差均小于0.001

决定系数均大于0.99; 主流入口温度和出口压力对叶片冷却性能的影响均较小; 在实验工况范围内

当主流进出口压比、冷气与主流温度比及流量比分别从1.3～1.5、0.6～0.7、3～8增大时

叶片的平均冷却效率分别增大了9.67%、9.39%、30.49%; 叶片的平均无量纲温度分别提高了2.98%

降低了1.34%、3.78%; 叶片的温度非均匀度分别降低了2.69%、28.79%

提高了50.27%。

Abstract

To effectively monitor the operation safety status of high-temperature turbine blades

an experimental study was conducted

focusing on a high-temperature blade using the response surface model. The aim was to investigate the impact of key working condition parameters on its cooling performance

thereby providing reliable data support. The central composite design was applied to the experimental design of the working parameters of the blade. The influence of mainstream inlet temperature

mainstream outlet pressure

pressure ratio of mainstream inlet to outlet

temperature ratio of mainstream to cooling air and flow ratio on the cooling efficiency distribution

dimensionless temperature distribution and temperature non-uniformity of the blade was experimentally studied. Subsequently

a response surface model was constructed to comprehensively assess the combined effects of the working parameters on the blade's cooling performance. The results demonstrate the high accuracy of the obtained response surface model

with root mean square errors below 0.001 and coefficient of determination exceeding 0.99. The inlet temperature and outlet pressure of the mainstream of the mainstream were found to have minimal impact on the cooling performance of the blade. However

within the range of operating parameters

when the inlet/outlet pressure ratio of the mainstream

the temperature ratio of the cooling air to the mainstream

and the flow ratio increase from 1.3 to 1.5

0.6 to 0.7

and 3 to 8

respectively. The average cooling efficiency of the blade is increased by 9.67%

9.39% and 30.49%

respectively. The average dimensionless temperature of the blade is increased by 2.98%

decreased by 1.34% and 3.78%

respectively. The temperature non-uniformity of the blade is decreased by 2.69% and 28.79%

increased by 50.27%

respectively.

关键词

Keywords

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