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以采取双管路并联结构的载人航天器圆筒辐射器为研究对象,建立了辐射器散热能力数值分析模型,对比分析了不同参数下,并联支路工质相同流动方向和相反流动方向两类布局方式给辐射器散热能力带来的影响,选取的参数包括管路长度、管路进口工质温度和液体工质流量。计算结果表明,在辐射器面板面积和流体回路长度相同的前提下,两类管路布局方式对应的辐射器散热能力存在不可忽视的差别。随着管路长度的增加,入口工质温度的增加,工质流量的减小,工质流向相同的辐射器散热能力越来越高于工质流向相反的辐射器。在文章的参数设定下,工质流向相同的辐射器与工质流向相反的辐射器间最大散热能力差别可达到19.5%,最小散热能力差别可达到16.7%。
In this paper, a numerical analysis model of radiant heat dissipation capacity was established for a manned spacecraft cylindrical radiator with double-pipe parallel structure, and the same flow direction and opposite flow direction of the parallel branch were analyzed under different parameters The influence of the class layout on the heat dissipation capacity of the radiator is as follows: the length of the pipeline, the temperature of the working fluid imported from the pipeline and the flow rate of the liquid working fluid are selected. The calculation results show that there is a significant difference between the radiators’ radiating ability corresponding to the two types of pipeline layouts on the premise of the same radiator panel area and fluid circuit length. With the increase of piping length, the inlet working fluid temperature increases, the working fluid flow decreases, the working fluid flow to the same radiator cooling capacity is higher and higher than the working fluid flow opposite radiator. Under the parameter setting of the article, the difference between the maximum heat dissipation capacity between the radiators with the same working medium flow direction and the radiators with the opposite working fluid flow can reach 19.5% and the minimum heat dissipation capacity difference can reach 16.7%.