摘要
利用计算流体动力学建立散热器室通风系统模型,采用标准k-ε湍流模型对散热器室的自然通风系统进行数值模拟研究,获得散热器不同截面的最高温度分布。将散热器不同截面处最高温度作为衡量散热效果的标准,研究不同导流罩类型、安装高度和出口面积对散热器室散热的影响规律。研究结果表明:散热器上方安装凹型导流罩可有效提高散热效果;导流罩安装高度H=2.9 m,出口面积比σ=0.49时,散热效果最好;通过比较导流罩类型、安装高度和出口面积对散热效果的差异,得到导流罩类型影响最大,安装高度次之,出口面积影响最小。
A model of the ventilation system in the radiator room was established by computational fluid dynamics(CFD). Standard k-ε turbulence model was used to investigate the heat transfer characteristics of the ventilation system in the radiator room. The distribution of maximum temperature at different sections of the radiator was obtained. The maximum temperature at different sections of the radiator was used as the standard to evaluate cooling effect. The effects of deflector with different types,installation heights and outlet areas on the radiator room cooling were investigated. The results show that the concave deflector installed above the radiator can improve the cooling effect effectively. The installation height of 2. 9 m and the outlet area ratio σ =0. 49 are the best solution for ventilating and cooling. The deflector type has the greatest impact,followed by the installation height,and the outlet area has the slightest impact.
出处
《河南科技大学学报（自然科学版）》
CAS
北大核心
2014年第6期66-70,8-9,共5页
Journal of Henan University of Science And Technology:Natural Science
基金
国家自然科学基金项目(51006023)
江苏省环保厅基金项目(2012027)
关键词
散热器室
通风
数值模拟
优化
radiator room
natural ventilation
numerical simulation
optimization
