An air-kerosene thermal mass coupled turbine blade with kerosene
microchannels added to the traditional laminated structure turbine blade is
proposed, and numerical simulations are carried out. The enhanced heat
transfer mechanism of the air-kerosene thermal mass coupled turbine blade is
studied, and the influence of different kerosene temperatures, blowing
ratios, and solid thermal conductivity on the heat transfer of the laminated
turbine blades is analyzed. The results show that adding kerosene
microchannels can significantly reduce the blade temperature and change the
cooling gas heat transfer direction inside the laminate cooling structure.
Compared with the traditional laminate cooling structure, adding kerosene
microchannels can significantly improve the heat transfer performance of the
blades, and the integrated cooling efficiency increases by 31.7%. Moreover,
when the kerosene temperature decreases from 400 K to 300 K, the cooling
efficiency increases by 3.9%. Similar conclusions can be obtained by
studying the increases in the blowing ratio and the solid thermal
conductivity, respectively.