Numerical research on the film-cooling gas turbine blade with the conjugate heat transfer method

作者：Sun, H. O.; Bu, S.; Luan, Y. G.^*; Sun, T.; Pei, X. M.

来源：Materials Research Innovations, 2015, 19(sup6): 175-180.

DOI：10.1179/1432891715Z.0000000001473

• Turbine blade
• Film cooling
• Conjugate heat transfer
• Cooling efficiency
• Temperature distribution

The conjugate heat transfer method is used to research the cooling effect of high pressure blades compared with the adiabatic method. The computational domain consists of the internal and external flow passages, the cylindrical holes on the pressure and suction sides and the quadrate holes in the trail. The results demonstrate that the downstream extends longer on the suction side, engendering larger area with higher cooling efficiency. The temperature drops streamwise as the coolants flow out of the holes. With conjugate method, the leading edge's detrimental high temperature vanishes, and its cooling efficiency is higher than the adiabatic simulation mostly. The influence of trail's structure and the inlet pressure on cooling efficiency is obtained with the conjugate technique. The trail's quadrate cooling apertures lessen the high-temperature area. The cooling efficiency rises as the inlet pressure increases in a certain range.

• 出版日期2015-6
• 单位哈尔滨工程大学