Calculation of the thermostressed state of a turbine nozzle vane |
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| Authors: | V A Trushin R A Sunarchin V A Zinov |
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| Institution: | (1) Turbomachinery Laboratory (TFA), Darmstadt University of Technology, Petersenstraße 30, 64289 Darmstadt, Germany;(2) MTU Aero Engines GmbH, Dachauer Str. 665, 80995 Munich, Germany; |
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| Abstract: | We present a technique and results of calculating the cooling air pressure and flowrate in the turbine nozzle deflector vane
duct, coefficients of heat transfer through air and from gas taking into account the influence of an air film heated in the
perforation holes as well as temperature and thermal stresses in the vane elements and its thermal barrier coating in the
GTE takeoff operational conditions. The effect of oval grooves in the coating behind the holes in the gas flow downstream
direction and possible cracking of material on the thermal stress distribution in metal is considered. |
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