文章摘要
不同进气方式对机载电子设备气冷冷板性能影响
Influence of Different Air Intake Modes on Performance of Air-Cooled Cold Plates of Airborne Electronic Equipment
投稿时间:2019-09-22  修订日期:2019-10-12
DOI:
中文关键词: 气冷冷板 机载电子设备 数值模拟 散热 飞机
英文关键词: Air cooled plate  Airborne Electronic  Equipment numerical simulation  Dissipate heat  Aircraft
基金项目:江苏省研究生科研与实践创新计划项目(KYCX19_0198);中央高校基本科研业务费专项资金; 江苏高校优势学科建设工程。
作者单位E-mail
任童 南京航空航天大学 1013218551@qq.com 
彭孝天 南京航空航天大学  
陈维建 南京航空航天大学  
冯诗愚 南京航空航天大学 shiyuf@nuaa.edu.cn 
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中文摘要:
      电子设备的热负荷占到了航空器全机热负荷的60%以上,高温失效是电子设备失效的主要形式,采取合理的散热手段及时带走电子设备产生的热量对飞行安全和电子设备工作的的稳定性有着至关重要的影响。本文利用计算流体力学方法(CFD)对某机载电子设备用气冷冷板进行了传热模拟,通过改变入口速度以及冷空气的流动方式,得到不同工况下气冷板各位置的温度分布和工作性能。研究结果显示,入口速度增加会使冷却效果提升但同时增加了流动阻力使得设备工作的稳定性下降。另外,流动方式一(中间进两侧出)的冷却效果优于流动方式二(两侧进中间出),流动方式二的工作噪音和流动阻力优于流动方式一,可根据实际情况的需要进行选择。
英文摘要:
      The thermal load of electronic equipment accounts for more than 60% of the total thermal load of the aircraft. High temperature failure is the main form of failure of electronic equipment. Reasonable heat dissipation means timely taking away the heat generated by electronic equipment to stabilize flight safety and electronic equipment. Sex has a crucial influence. In this paper, the computational fluid dynamics (CFD) method is used to simulate the heat transfer of an air-cooled cold plate for an airborne electronic device. By changing the inlet flow rate and the flow pattern of cold air, the temperature distribution and working performance of each position of the air-cooled plate under different working conditions are obtained. The research results show that the increase of the inlet flow rate will increase the cooling effect but increase the flow resistance, which will reduce the stability of the equipment operation. In addition, the cooling effect of the flow mode one (the middle side is two sides) is better than the flow mode two (the two sides enter the middle), and the working noise and flow resistance of the flow mode two are better than the flow mode one, which can be carried out according to the actual situation select.
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