一种基于太阳能热浮力的新型观瞄平台载体热数值分析

Thermal analysis on a new type of viewer-sight platform carrier based on the solar thermal buoyancy

提出了一种基于太阳能热浮力的新型战场信息观瞄平台,根据辐射传热理论建立了太阳能热气球的热力学模型,使用FLUENT对太阳能气球的热特性进行了数值计算,获得了气球的蒙皮、内部空气的温度场,着重分析了在太阳辐射下达到平衡状态时热气球直径对蒙皮表面及其内部空气温度分布的影响。结果表明,当气球在太阳辐射下达到平衡状态时,气球蒙皮最高温度为348 K,内部空气的平衡温度为334 K,蒙皮最大温差为25K左右,气球蒙皮温度分布沿竖直方向梯度较大。

A new type of battlefield information platform based on the solar thermal buoyancy was put forward,beginning on solar energy utilization. According to the radiation heat transfer theory we set up a thermodynamic model of solar balloon in advance. On the basis,we used computational fluid dynamics（CFD） software FLUENT to draw the temperature field distribution graph of skin surface and the internal air. Then we analysed the temperature distribution of skin surface and the internal air in different diameter under the equilibrium state. The simulation results indicate that the highest temperature on balloon surface is 348 K,the average temperature of the internal air under the equilibrium state is 334 K and the maximum temperature difference is 25 K or so. And the temperature gradient of balloon skin is larger in the vertical direction.