Aerothermodynamics

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

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

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.

Cite this article

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

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