绝热层瞬态比热流随大气压力和环境温度的变化而成余弦曲线变化；
The transient heat flux is varied with the changing air temperature and pressure, and the varying shape is curved like a cosine.
结果表明：在相同的管、壳程流速下热流体在壳程时换热器总传热系数比热流体在管程时相对高出约33%。
The results showed that the total heat transfer coefficient of heat exchanger with hot water arranged in shell-side was relatively higher by 33% than that with hot water arranged in tube-side.
针对姿控发动机试验热流参数测试需求，在分析热流测量机理的基础上，提出了一种基于DT800的高性价比热流参数测试方案。
To meet the demand of heat flux measurement of attitude control engine tests, a heat flux measurement program about DT800 is proposed based on the analysis of the heat flux mechanism.
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