服务器进风挡板对单机柜数据中心的热性能优化

Thermal Performance Optimization of Server Air Inlet Baffle for Single Rack Data Center

针对模块化单机柜数据中心的积热问题,提出添加服务器进风挡板的优化策略,并使用计算流体动力学(CFD)软件进行仿真计算。其中服务器模型设置为多孔介质模型,服务器进风挡板共设置5种不同尺寸和5种不同安置角度,同时分析了机柜中气流的最佳分布。研究结果表明,尺寸为2 cm×44 cm、角度为30°的进风挡板是消除数据中心积热问题的最优选择。采用最优挡板后,局部热点温度可降低至303.2 K,服务器进风温度和速度标准差分别可降低6.4 K和0.3 m/s,RTI值降低0.3,ηr值提高0.5,IOM值降低10.2。

Aiming at the heat accumulation problem of modular single rack data center,an optimization strategy of adding server air inlet baffle is proposed and the computational fluid dynamics(CFD)software is used for simulation calculation.The server model is set as porous media model.In this paper,five different sizes and five different placement angles are set for the baffle,and the optimal distribution of air flow in the rack is analyzed.The results show that the air inlet baffle with the size of 2 cm×44 cm and the angle of 30°is the best choice to eliminate the heat accumulation problem in the data center.After adopting the optimal baffle,the local hot spot temperature can be reduced to 303.2 K,the standard deviation of server inlet air temperature and speed can be reduced by 6.4 K and 0.3 m/s respectively,and the RTI value can be reduced by 0.3,Theηr value increased by 0.5 and the IOM value decreased by 10.2.