1.隆鑫通用动力股份有限公司技术中心总体结构与性能研究所;2.陕西科技大学 机电工程学院 陕西 西安
1.General Structure and Performance Research Institute of R D Center,ChongQing LONCIN Motor Co,Ltd;2.School of Mechanical and Electrical Engineering,ShaanXi University of Science Technology,ShaanXi Xi’an
In order to study the flow field distribution of unmanned aerial vehicle (UAV) in different cooling modes of oil cooler, based on computational fluid dynamics method, the flow field of UAV in air-cooled oil cooler state and that in water-cooled oil cooler state are numerically simulated by fluid analysis software STAR-CCM +, and the air quantity distribution, velocity distribution and heat exchange quantity of UAV at different oil cooler states are analyzed. The results show that the cooling capacity of the UAV under the condition of air-cooled oil cooler is better , while the hot-air reflux of the radiator is large under the condition of water-cooled oil cooler, which is unfavorable to the heat dissipation of the UAV. Aiming at the problem of low heat exchange quantity of the UAV under the condition of water-cooled oil cooler, the corresponding optimization countermeasures are put forward. Through 3D-CFD optimization, the fan speed is increased to 2500 rpm, the heat exchange capacity of the UAV under the condition of water-cooled oil cooler can reach that of the UAV with air-cooled oil cooler; at the UAV state with water-cooled oil cooler, the front-end wind cover of the radiator is added and the rotating speed is appropriately increased (about 100 RPM), the heat exchange capacity of the UAV with air-cooled oil cooler can also reach that of the UAV with air-cooled oil cooler, and the cooling air quantity of the UAV is significantly increased. The research results can provide theoretical guidance and simulation data support for the design and optimization of heat dissipation mode and thermal performance improvement of UAV oil cooler.
黄灿,谭礼斌,袁越锦. 基于STAR-CCM+的某无人机流场CFD数值模拟分析[J]. 科学技术与工程, , ():复制