卧式陈列柜风幕热卷吸系数的关联式模型  

A Correlation Model of Thermal Entrainment Factor for Air Curtain in Horizontal Display Cabinet

作　　者：余克志[1] 丁国良[2] 陈天及[1] 

机构地区：[1]上海海洋大学制冷工程系,上海201306 [2]上海交通大学制冷与低温工程研究所,上海200240

出　　处：《上海交通大学学报》2011年第9期1384-1388,共5页Journal of Shanghai Jiaotong University

基　　金：上海海洋大学博士启动基金项目(A-2400-10-0134);上海市教育委员会重点学科建设项目(J50704);上海市科学技术委员会"创新行动计划"项目(09dz1202400)

摘　　要：通过无量纲变换,表明陈列柜风幕的热卷吸系数与4个无量纲量有关,即反映风幕送风影响因素的雷诺数、反映环境影响因素的理查逊数、反映风幕结构影响因素的2个无量纲数.在计算流体力学模拟计算结果的基础上,建立了卧式陈列柜风幕热卷吸系数的关联式模型,并将关联式模型计算所得热卷吸系数与其实测值进行对比.结果表明,采用关联式模型计算所得卧式陈列柜风幕的热卷吸系数的可靠性较好,计算结果与相应的实验测试结果之间的最大偏差和平均偏差分别为11.7%和-0.6%.From dimensionless transformation,the thermal entrainment factor（TEF） for air curtain in a horizontal display cabinet is dependent on four dimensionless numbers： Reynolds number indicating effect of air curtain supply parameters,Richardson number indicating effect of ambient parameter and two other dimensionless numbers indicating effect of air curtain geometry parameters.The correlation model of TEF for air curtain in a horizontal display cabinet was developed based on the computational fluid dynamics（CFD） simulation results,and the TEF calculated by the correlation model was compared with the measurement.The results show that the reliability validation of correlation model is good.The TEF of display cabinet predicted by the correlation model gives a maximum deviation of 11.7% and a mean deviation of-0.6% compared with the published experimental data.

关 键 词：陈列柜 风幕 热卷吸系数 关联式模型 计算流体力学 

分 类 号：TB65[一般工业技术—制冷工程]