JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2018, Vol. 48 ›› Issue (1): 65-70.doi: 10.6040/j.issn.1672-3961.0.2017.068

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Analysis on thermal-solid coupling properity of flat-plate film cooling

WANG Zhan1, ZHANG Chao2*   

  1. 1. School of Energy and Power Engineering, Shandong University, Jinan 250061, Shandong, China;
    2. School of Mechanical Engineering, Tianjin University of Technology, Tianjin 300384, China
  • Received:2017-02-27 Online:2018-02-20 Published:2017-02-27

Abstract: In order to analysis the comprehensive cooling effect and reliability of the film cooling method, the thermal-solid coupling calculating method was utilized to simulate the cooling process on the flat plate with film cooling holes. The inner temperature and the thermal stress distribution profiles were obtained, and the influence of cooling effects by different blowing ratios and hole types was compared. The results showed that the uniform inner temperature distribution was caused by the inner cooling and metal heat conduction, the thermal stress consentrated on the leading edge and trailing edge of the cooling hole. Conpared with the traditional round hole, the fan-shaped and double-jet holes could obviously improve the cooling effectiveness and decrease thermal stress. Research results could provide a reference for the cooling design of the gas turbine blade.

Key words: gas turbine, thermal-solid coupling, thermal Stress, hole type, film-cooling

CLC Number: 

  • TK225
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