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In this paper, a heat flux measurement based thermal analysis method has been developed to analysize the heat transfer process within fuel-cooled structure of a combustor. By using data obtained from newly-upgraded heat flux sensors developed based on the principle of Gardon heat-flux gauge, the complex heat transfer processes relevant to such cooling structure exposed in severe heat environment are able to be simplified to two coupled process: flow and convective heat transfer of fuel within cooling channels and heat transfer within cooling channels-embeded combustor structure. The validness and overall correctness of this analysis method are tested using data of a Mach 2.5 supersonic combustor. The comparation between the simulation and experiment results are satisfactory. The relatively simpliness, decent accuracy and low computation cost make it promising to put this analysis method into engineering use.

A Thermal Analysis Method for Fuel-Cooled Combustor Structure based on Heat Flux Measurement