基于微流道冷却的水卡式量热计结构优化与试验分析OA北大核心CSTPCD

The aerodynamic heating environment encountered during hypersonic flight or reentry from space is severe in which the highest temperature can even reach 10000℃,resulting in a failure of commonly used calorimeterts showing great heat flux testing performance and thermal load viability.An new water calorimeter based on micro-channel cooling was developed in order to solve the problem of continuous and accurate measurement of high heat flux on the surface of high supersonic aircraft in ground test,which was prepared by 3D printing.Based on the numerical simulation,the size and configuration of the new water calorimeter was optimized.Comparing to traditional water calorimeter,the temperature rise of the core area is reduced by 50 percent under the same cold-wall heat flux,which illustrates the test and survival ability of micro-channel water calorimeter in extreme thermal environment.Finally,the arc heated jet test was carried out,which shows that the micro-channel water calorimeter could measure pressure and temperature and heat flow parameters synchronously with great local response characteristics,which could realize the integrated recognition of high temperatures flow field parameters.Furthermore,its maximum heat flow measurement range is over 18 MW/m2,and the absolute deviation and average deviation of the sensor is less than 3.44%and±1.72%respectively.