数据中心服务器水冷散热器的数值模拟与实验验证

Numerical simulation and experimental verification of water-cooled heat sink in data center server

中文关键词: 数据中心  翅柱式散热器  CPU芯片  综合系数

英文关键词: data center  pin- fin heat sink  CPU chip  comprehensive coefficient

中文摘要:

      水冷散热器在数据中心服务器CPU芯片冷却技术中发挥着重要的作用。如何获得高性能的散热效率成为了该领域关注的重点。针对一种翅柱式水冷散热器，用数值模拟的方法，通过改变翅柱的结构参数来优化散热器的散热性能以及流动特性。在相同的翅柱间距下，改变翅柱的直径和高度，在不同的入口流量下，研究其温度，努塞尔数，压降，摩擦系数，分析比较其综合系数对散热性能的影响，并对结果进行了实验验证。结果表明翅柱高度3.9mm，直径为0.9mm的散热器其综合系数最大

英文摘要:

      Water-cooled heat sinks play an important role in cooling technology of CPU chip in data center server. How to achieve high-performance cooling efficiency has become the focus of attention in this field. For a pin-fin water-cooled heat sink, the heat dissipation performance and flow characteristics of the heat sink are optimized by numerical simulation method by changing the structural parameters of the fin. Under the same fin spacing, the diameter and height of the fins were changed. Under different inlet flow rates, the temperature, Nusselt number, pressure drop and friction coefficient were studied and the effect of its comprehensive coefficient on heat dissipation performance was analyzed and compared. The results were verified experimentally. The results show that the heat sink with a height of 3.9 mm and a diameter of 0.9 mm has the largest comprehensive coefficient.