无人机电子设备舱热环境仿真分析

Thermal environment simulation analysis of UAV electronic equipment cabin

为满足无人机电子设备舱对舱内热环境的严苛要求,文章采用了有限体积法求解温度场的控制方程。根据无人机电子设备舱的材料结构特点和边界条件,应用FLUENT软件进行了设备舱的数值仿真分析;在此基础上提出了搭建支架的散热方案并对舱内热环境进行了模拟。结果显示,采用搭建支架的措施可使电子设备的表面温度降低5℃,较好地改善了电子设备舱的散热情况。该研究可为航空航天领域电子设备舱的热设计提供参考。

With a view to the strict thermal environmental requirements for electronic equipment cabin of unmanned aerial vehicle(UAV),the finite volume method was applied for solving the temperature governing equations in this paper.Considering the specific features of material structure and the boundary conditions for the UAV electronic equipment cabin,the numerical simulation analysis was conducted via FLUENT software.On this basis,a heat dissipation scheme of building a bracket as the support was proposed,and then the thermal environment inside the electronic equipment cabin was simulated.The results indicate that the surface temperature of the electronic equipment can be reduced by 4℃with the use of the bracket.The proposed research may provide a reference for the thermal design of electronic equipment cabin in aerospace field.