Performance of heat-pipe cooling of turbine blade

doi:10.7523/j.issn.2095-6134.2014.06.018

Abstract

Abstract:

Two straight turbine blades with different internal structures and different cooling schemes have been studied using conjugate heat transfer method. We compare the performances of heat-pipe cooling and impingement cooling through analyzing the temperature on external surface,heat transfer coefficient of middle-span, and overall cooling effectiveness (OCE). The results show that the heat-pipe cooling leads to more uniform temperature distribution along the tailing edge of the blade and wider low-temperature region around the transition point. It has been found that the effectiveness of the heat-pipe cooling reaches to or even exceeds that of the impingement cooling under the same primary flow conditions.

Key words: turbine blade, heat-pipe cooling, impingement cooling, conjugate heat transfer, turbulence transition

CLC Number:

V231.1

ZHAN Liyuan, LI Yuhua, JIANG Yuyan, TANG Dawei. Performance of heat-pipe cooling of turbine blade[J]. , 2014, 31(6): 846-850.

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