塞块量热计的热流计算与修正方法研究  

Research on heat flux calculation and correction methodsof the slug calorimeter

作　　者：朱新新[1] 王辉[1] 杨凯[1] 朱涛[1] 杨庆涛[1] 刘进博 ZHU Xinxin;WANG Hui;YANG Kai;ZHU Tao;YANG Qingtao;LIU Jinbo(Hypervelocity Aerodynamics Institute of China Aerodynamics Research and Development Center,Mianyang Sichuan 621000,China)

机构地区：[1]中国空气动力研究与发展中心超高速空气动力研究所,四川绵阳621000

出　　处：《实验流体力学》2020年第5期97-102,108,共7页Journal of Experiments in Fluid Mechanics

摘　　要：为减小塞块量热计的热流测量误差,对其热流计算与修正方法开展了研究。根据能量守恒原理和传热理论,建立了隔热套结构塞块量热计的传热模型和计算方法;通过对塞块量热计传热模型的仿真分析,给出了温升率提取方法和计算误差的主要影响因素;提出了直接比对标定修正方法和基于标定的数值计算修正方法。仿真和试验结果表明:两种方法均能较大幅度减小塞块量热计的热流测量误差,使其误差控制在5%以内;直接比对标定修正方法的误差相对更小,但要求热流标定系统能覆盖被测热流范围;基于标定的数值计算修正方法对热流标定系统要求较低,适用范围更广。Heat flux calculation and correction methods of slug calorimeter were studied in order to reduce measurement error of heat flux.Based on the energy conservation principle and the heat transfer theory,the heat transfer model and calculation method of slug calorimeter with insulating sleeve were built.By analyzing the simulation model of slug calorimeter,the method of extracting the temperature rise rate and the main factors affecting the calculation error were given.Finally the direct comparison calibration correction method and the numerical calculation correction method based on heat flux calibration were proposed.The simulation and test results show that the two methods can greatly reduce the heat flux measurement error.The measurement error of the direct comparison calibration correction method is relatively smaller but the method requires that the heat flux calibration system can cover the heat flux measurement range.While the numerical calculation correction method based on heat flux calibration has lower requirement on the heat flux calibration system and thus has a wilder application field.

关 键 词：热流测量 塞块量热计 热流标定 修正方法 

分 类 号：V441[航空宇航科学与技术—飞行器设计]