【摘要】 基于某密闭式小型计算设备的散热需求，本文采用计算流体力学软件6sigmaET对整机的散热结构进行仿真优化，设计了一套由铝结合镀锌钢板构成的中框组件和经肋化处理的外壳构成的自然冷却式散热结构。数值研究结果表明，当经肋化处理的上壳尺寸为86 mm×65 mm×16 mm时，肋间距最优值大约为5～6 mm。另外，当整机底壳被抬高至离平面距离为3 mm时，设备的整体的散热性能改善效果有限。通过对试制样机进行散热性能实验后得出，仿真分析结果与实验测试结果一致性较好，最大误差为3.7℃。并且该计算设备内的器件的温度均在其硬件规格允许的范围内，满足整机系统的使用要求。更多还原

【Abstract】 Aiming at the cooling requirements of an airtight small computing equipment, computational fluid dynamics software 6sigmaET is applied to simulate and optimize the cooling structure of overall unit. A set of natural cooling structure which composed of aluminum combined with galvanized steel and ribbed shell is designed.Simulation results indicate that when the size of the ribbed shell is 86mm×65mm×16mm, the optimal rib gap is about 5mm-6mm and when the distance between the bottom shell and horizontal plane is 3mm, the thermal performance improvement is not obvious. The experiment results indicate that the simulation results are in good agreement with experimental results, and the maximum error is 3.7 ℃. The temperature of the devices is within allowable range of its hardware specifications, which meets the requirement of over unit.更多还原