尖前缘一体化高温热管启动性能计算分析
发布时间：2018-11-25 11:49
【摘要】：针对尖前缘高温热管工程设计与启动性能评估需求,基于描述碱金属高温热管启动过程的"温度锋面"模型,建立了一种用于分析不规则外形且承受非均匀瞬态气动加热的一体化尖前缘高温热管启动性能工程计算方法。该方法结合尖前缘气动加热环境分布特点进行计算节点划分,采用热管基本理论和局部能量守恒原理计算热管温度分布及"温度锋面"位置,实现尖前缘热管启动过程的理论预测。同时,采用均匀受热圆柱热管和尖前缘一体化热管启动试验结果对计算方法进行了验证。最后针对某尖前缘一体化高温热管结构在气动加热环境下的启动性能进行计算分析,提出了减小尖前缘高温热管启动时间的可能方法和措施:尖前缘高温热管启动后等温性良好,通过控制热管总长、壳体厚度、工质充装量等设计参数或调整热管初始温度可进一步缩短热管启动时间。
[Abstract]:According to the requirement of engineering design and start-up performance evaluation of high temperature heat pipe with tip leading edge, the "temperature front" model is used to describe the starting process of alkali metal high temperature heat pipe. An engineering calculation method for the start-up performance of an integrated tip front high temperature heat pipe is established to analyze the irregular shape and withstand non-uniform transient aerodynamic heating. This method combines the characteristics of the pneumatic heating environment distribution of the tip leading edge to divide the calculation nodes. The heat pipe basic theory and the local energy conservation principle are used to calculate the temperature distribution of the heat pipe and the position of the "temperature front". The theoretical prediction of the starting process of the tip leading heat pipe is realized. At the same time, the calculation method is verified by the test results of uniform heating cylindrical heat pipe and tip front integrated heat pipe. Finally, the starting performance of a tip front integrated high temperature heat pipe structure under pneumatic heating environment is calculated and analyzed. The possible methods and measures to reduce the starting time of the tip front high temperature heat pipe are put forward. The isothermal property of the tip front high temperature heat pipe is good after starting, and the total length of the heat pipe and the shell thickness are controlled. The starting time of heat pipe can be further shortened by adjusting the initial temperature of heat pipe.
【作者单位】： 中国航天空气动力技术研究院;
【分类号】：V231
本文编号：2355994
[Abstract]:According to the requirement of engineering design and start-up performance evaluation of high temperature heat pipe with tip leading edge, the "temperature front" model is used to describe the starting process of alkali metal high temperature heat pipe. An engineering calculation method for the start-up performance of an integrated tip front high temperature heat pipe is established to analyze the irregular shape and withstand non-uniform transient aerodynamic heating. This method combines the characteristics of the pneumatic heating environment distribution of the tip leading edge to divide the calculation nodes. The heat pipe basic theory and the local energy conservation principle are used to calculate the temperature distribution of the heat pipe and the position of the "temperature front". The theoretical prediction of the starting process of the tip leading heat pipe is realized. At the same time, the calculation method is verified by the test results of uniform heating cylindrical heat pipe and tip front integrated heat pipe. Finally, the starting performance of a tip front integrated high temperature heat pipe structure under pneumatic heating environment is calculated and analyzed. The possible methods and measures to reduce the starting time of the tip front high temperature heat pipe are put forward. The isothermal property of the tip front high temperature heat pipe is good after starting, and the total length of the heat pipe and the shell thickness are controlled. The starting time of heat pipe can be further shortened by adjusting the initial temperature of heat pipe.
【作者单位】： 中国航天空气动力技术研究院;
【分类号】：V231
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