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Film Cooling Effectiveness Superposition Calculation of Double-Row Injection Holes on Turbine Vane

  • XU Zhipeng ,
  • ZHU Huiren ,
  • LIU Cunliang ,
  • YE Lin ,
  • ZHOU Daoen
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  • 1. School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, China
    2. Shaanxi Key Laboratory of Thermal Sciences in Aero-engine System, Xi’an 710129, China

网络出版日期: 2023-12-04

基金资助

The authors gratefully acknowledge the financial support from the National Science and Technology Major Project (J2019-III-0003-0063, 2017-III-0001-0025) and the National Natural Science Foundation of China (No. 51936008).

版权

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2022

Film Cooling Effectiveness Superposition Calculation of Double-Row Injection Holes on Turbine Vane

  • XU Zhipeng ,
  • ZHU Huiren ,
  • LIU Cunliang ,
  • YE Lin ,
  • ZHOU Daoen
Expand
  • 1. School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, China
    2. Shaanxi Key Laboratory of Thermal Sciences in Aero-engine System, Xi’an 710129, China

Online published: 2023-12-04

Supported by

The authors gratefully acknowledge the financial support from the National Science and Technology Major Project (J2019-III-0003-0063, 2017-III-0001-0025) and the National Natural Science Foundation of China (No. 51936008).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2022

摘要

本文采用红外测温技术进行了涡轮叶片上双排射流孔的气膜冷效叠加实验,将簸箕形孔和圆柱形孔的叠加实验结果与Sellers叠加公式和改进的Sellers叠加公式进行了对比验证,并通过数值模拟分析了气膜冷效的叠加机理。研究发现,采用Sellers法在吸力面侧比压力面侧更能准确预测气膜冷效,所研究的两种气膜孔的射流表现出不同的叠加模式,圆柱形孔为“块状”叠加模式,而簸箕形孔是“片状”叠加模式。这其中,反转对涡和气膜分离是影响Sellers法精度的主要因素。改进的Sellers法可以显著提高各种工况下的气膜冷效叠加预测精度。改进方法可将吸力面侧圆柱形孔的叠加误差从28%减少到3%,将吸力面侧的簸箕形孔的叠加误差从42%减少到13%。同时,它可将压力面侧圆柱形孔的叠加误差从30%减少到8%,将压力面侧的簸箕形孔叠加误差从23%减少到15%。

本文引用格式

XU Zhipeng , ZHU Huiren , LIU Cunliang , YE Lin , ZHOU Daoen . Film Cooling Effectiveness Superposition Calculation of Double-Row Injection Holes on Turbine Vane[J]. 热科学学报, 2022 , 31(6) : 2424 -2437 . DOI: 10.1007/s11630-022-1693-7

Abstract

Film cooling effectiveness superposition of double-row injection holes on the turbine vane was studied by infrared temperature measurement experiment. The Sellers superposition method and a modified Sellers method were adopted for dustpan-shaped hole and cylindrical hole. Numerical simulations were implemented to analyze the film superposition mechanism. It is found that the Sellers method is more accurate on the suction side than the pressure side. Injection film of the two types of holes exhibits different superposition modes. Cylindrical hole are “blocky-like” superposition. Dustpan-shaped hole are “sheet-like” superposition. The counter-rotating vortex pairs and separation of the film are the main factors affecting the accuracy of Sellers film superposition method. The modified method can significantly improve the superposition prediction accuracy for almost all situations. The modified method reduces superposition errors from 28% to 3% for the cylindrical hole, and from 42% to 13% for the dustpan-shaped hole on the suction side. It reduces superposition errors from 30% to 8% for the cylindrical hole, and from 23% to 15% for the dustpan-shaped hole on the pressure side.

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