Cascade Heat Transfer Experiment Validation in Short Duration Transonic Wind Tunnel

doi:10.7652/xjtuxb201309008

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Cascade Heat Transfer Experiment Validation in Short Duration Transonic Wind Tunnel

更新时间：2025-07-09

- Cascade Heat Transfer Experiment Validation in Short Duration Transonic Wind Tunnel
- Vol. 47, Issue 9, Pages: 49-54(2013)
- 作者机构：
  
  西北工业大学动力与能源学院,西安,710072
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201309008
  CLC： V231.1
- Online First：10 September 2013，
  
  Published：2013
- 稿件说明：
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Cascade Heat Transfer Experiment Validation in Short Duration Transonic Wind Tunnel[J]. 2013, 47(9): 49-54.
DOI：

Cascade Heat Transfer Experiment Validation in Short Duration Transonic Wind Tunnel[J]. 2013, 47(9): 49-54. DOI： 10.7652/xjtuxb201309008.

摘要

利用短周期风洞

在发动机典型雷诺数和马赫数状态下对MarkII 叶型进行了表面换热测量; 用基于一维半无限假设的脉冲响应法将测量的表面温度处理为热流密度

并用最小二乘法得到主流绝热壁温和表面换热系数。实验结果与国外文献使用稳态实验方法获得的结果基本一致。对数据处理方法进行了详细的误差分析

并将二维瞬态热分析法与脉冲响应法进行了对比

表明在叶片前缘曲率较大处、尾缘壁厚较薄处和换热系数剧烈变化处

一维半无限大假设条件遭到破坏

脉冲响应法的计算结果存在偏差。

Abstract

Surface heat and mass transfer measurement of MarkII blade was conducted in short-duration wind tunnel with engine representative Reynolds and Mach numbers. The impulse response method based on one dimensional semi-infinite hypothesis was used to treat the measured surface temperature as surface heat transfer rate

and the adiabatic surface temperature and surface heat transfer coefficient were then acquired by least square solution. The heat transfer results are consistent with the steady-state experimental results of public documentation. In addition

the detailed error of the data processing method was analyzed

and two-dimensional transient thermal analysis was compared with the impulse response method. It is found that at the leading edge with larger curvature

trailing edge with thinner thickness and the locations of sharply changed heat transfer coefficient

the one-dimensional and semi-infinite hypothesis is destroyed and the impulse response method leads to a result with larger error.

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references

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