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Coupled Heat Transfer in High Temperature Ceramic Wall with Heat Pipe under Aeroheating and Radiative Cooling

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3 Author(s)
Shenghua Du ; Sch. of Energy Sci. & Eng., Harbin Inst. of Technol., Harbin, China ; Qing Ai ; Xinlin Xia

An effective heat transfer device such as heat pipe is used to reduce thermal stress and thermal gradients of inner material by transferring heat from one location to another with very large heat fluxes. Radiative transfer is important and complex at elevated temperature of the ceramic material. These temperatures in the two aeroheating regions and working fluid inside heat pipe are unknown and depend on the heat exchange process. The heating conditions for the internal and external surfaces of every aeroheating region can be quite different. In this paper, the control volume method was combined with the Monte Carlo method to calculate the coupled heat transfer in this kind of composite wall. The effects of aeroheating flux to the outer surface and the area of radiative cooling on the heat transfer were analyzed. The results show that the thermal environment of the outer surface and the area of radiating cooling are the key parameters for the heat transfer in the structure.

Published in:

2010 Asia-Pacific Power and Energy Engineering Conference

Date of Conference:

28-31 March 2010