数据中心刀片式服务器不同冷却方式的模拟对比

Simulation Comparison of Different Cooling Modes of Blade Server in Data Centers

本文以刀片式服务器的冷却为研究对象,应用6SigmaDC软件的电子热分析模块,构建了刀片式服务器模型,对不同参数下的翅片式散热器在刀片式服务器中的散热情况进行了数学模拟。得到翅片式散热器翅片高度、齿数、翅片厚度等多个参数对散热器散热性能的影响规律,通过对比分析得到翅片散热器的最优结构参数,及芯片风冷散热所能达到的最低温度。为优化芯片的散热,在相同服务器上构建冷水板水冷散热模型,与风冷散热时芯片的温度进行对比,得出芯片水冷散热性能是风冷散热的1.3倍。基于刀片式服务器内部温度分布分析,提出刀片式服务器采用风冷与水冷相结合的混合冷却为最佳散热方式,为数据中心服务器的散热设计提供了理论参考。

A blade server with fin heat sink was set as the research object of a cooling experiment and its performance was evaluated via an electronic thermal analysis module from 6SigmaDC software.The heat dissipation of the heat sink was simulated using different equipment parameters in blade server.The analysis concentrated on the effects of influencing factors such as fin height,number of teeth,fin thickness,on the heat dissipation performance of the heat sink.Through a comparative analysis,the optimal structure parameters of fin heat sink and lowest temperature of the chip were obtained through air cooling.Nevertheless,better results were achieved by chip cooling.A water-cooled cold plate model was constructed with the same blade server.In comparison with the temperature of the chip cooled by heat sink,the results indicated that the liquid cooling performance was 1.3 as that of than the air cooling.Thus,a hybrid cooling method of air and liquid cooling was proposed to provide a theoretical reference for the cooling design of the blade server.