摘要
本文针对通信机柜自然对流散热强化问题,提出了一种新型树叶形翅片强化传热结构。构建了该结构的三维流动传热数值模型,并采用实验方法验证了模型的可靠性。进一步,对翅片关键几何参数进行了数值优化,并对优化后的树叶形翅片与竖直平板翅片、开缝翅片和烟囱翅片等3种典型翅片的速度与温度梯度协同性和传热性能进行了对比分析。结果表明,所提出的树叶形翅片的翅片倾角与翅片间距存在最佳值,分别为60°和10 mm。同时,在相同工况下,与3种典型翅片相比,所提出的新型树叶形翅片的协同角最小,换热性能最好。研究结果表明,本文所提出的新型树叶形翅片是一种有效的通信机柜强化散热结构。
In this paper, a novel heat dissipation in the cabinet leaf-type fins is proposed in order to of the communication equipment. enhance the natural convective A three-dimensional flow and heat transfer numerical model is built and validated by experimental method. After validation, the key geometric parameters of the fins are numerically optimized, and then, the synergy angles between velocity and temperature gradient, and heat transfer performance of the optimal leaf-type fins, conventional vertical plate fins, slotted fins and chimney-type fins are comparatively studied under the same heating power. The results show that there are optimum fin incline angle and fin pitch （60°, 10 mm） for the leaf-type fin , and the average synergy angle and temperature of the leaf-type fin are the lowest. The above studies indicate that the proposed leaf-type fins can efficaciously enhance the natural convective heat dissipation in the cabinet of the communication equipment.
作者
王文奇
王飞龙
何雅玲
校敏奇
WANG Wen-Qi;WANG Fei-Long;HE Ya-Ling;XIAO Min-Qi(Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education,School of Energy and Power Engineering,Xi＇an Jiaotong University,Xi＇an 710049,China;Xi＇an Research Institute,Huawei Technologies Co Lid,Xi＇an 710075,China)
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2018年第11期2469-2475,共7页
Journal of Engineering Thermophysics
基金
国家自然科学基金项目(No.51806165)
关键词
新型树叶形翅片
场协同原理
数值模拟
实验研究
a novel leaf-type fins
field synergy principle
numerical simulation
experimental study
