Volume 34 Issue 12
Dec.  2019
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YANG Guang, AI Yanting, XU Yi. Numerical study on influence of local regular coating on temperature measurement of film-cooled vane[J]. Journal of Aerospace Power, 2019, 34(12): 2686-2694. doi: 10.13224/j.cnki.jasp.2019.12.018
Citation: YANG Guang, AI Yanting, XU Yi. Numerical study on influence of local regular coating on temperature measurement of film-cooled vane[J]. Journal of Aerospace Power, 2019, 34(12): 2686-2694. doi: 10.13224/j.cnki.jasp.2019.12.018
shu

Numerical study on influence of local regular coating on temperature measurement of film-cooled vane

doi: 10.13224/j.cnki.jasp.2019.12.018
  • 1.

    Key Laboratory of Advanced Measurement and Test Technology for Aircraft Propulsion System,Liaoning Province,Shenyang Aerospace University,Shenyang 110136,China

  • 2.

    Sichuan Gas Turbine Establishment,Aero Engine Corporation of China,Jiangyou Sichuan 621703,China

  • Received Date: 2019-06-13
  • Publish Date: 2019-12-28
    Abstract
  • In order to study the influence mechanism of temperature measurement coating on measuring accuracy of fine thermocouple, a three-dimensional model for film-cooled vane was established based on conjugated heat transfer(CHT) method. SST(shear stress transport) γ -θ turbulence model was carried out on the film-cooled vane sprayed with alumina coating on the front edge of suction, front edge of pressure and trailing edge of pressure surface. The error between the numerical results and the experimental results was controlled below 5%, verifying the effectiveness of the numerical method. The results showed that, the coating had a significant effect on the flow characteristics of gas near the wall. However, the numerical results of three coating conditions showed that the temperature difference amplitude at the front edge of pressure was smaller than that at the front edge of suction, and the temperature measurement error was 35.5% lower than that at the trailing edge of pressure. In addition, on the pressure surface and the front edge of suction, the best temperature measurement area was between the middle and the lower end of the coating, while on the trailing edge of the pressure surface, the best temperature measurement area was close to the upper end of the coating.

     

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