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本文针对飞艇外形特征,分别采用纵掠平板对流传热准则和CFD仿真软件,开展了地面至20公里不同高度、风速下的飞艇对流传热系数分析和对比,发现飞艇平均流传热系数与海拔高度、来流风速呈现独立的关联特性,通过总结,构建了一套基于高度影响因子和风速影响因子的全高度飞艇对流传热系数工程算法,为飞艇热设计工作提供了良好的简化工具。
In this paper, according to the characteristics of the airship, convection heat transfer criterion and CFD simulation software are respectively used to analyze and contrast the convective heat transfer coefficient of the airship at different heights from 20 km to the ground surface. The results show that the average heat transfer coefficient of the airship and the altitude , And the flow velocity of the inflow shows an independent correlation characteristic. Based on the conclusion, a set of engineering algorithms for the convective heat transfer coefficient of the full height airship based on the height impact factor and wind speed impact factor are constructed, which provides a good simplified tool for the thermal design of the airship.