柜外环境对敞开立式冷藏陈列柜性能影响的多尺度计算研究  

Multiscale computational study of the performance of open vertical refrigerated display cabinet influenced by external environment

作　　者：吴学红[1] 赵鑫利[1] 李伟平[1] 常志娟[1] 吕彦力[1] 龚毅[1] 

机构地区：[1]郑州轻工业学院能源与动力工程学院,河南郑州450002

出　　处：《郑州轻工业学院学报（自然科学版）》2015年第2期67-71,共5页Journal of Zhengzhou University of Light Industry:Natural Science

基　　金：国家自然科学基金项目(21076200);河南省省院合作项目(092106000013);郑州市领军人才项目(131PLJRC640)

摘　　要：应用系统多尺度方法建立了从超市、敞开立式冷藏陈列柜到搁架的物理模型,分析了三个不同尺度的流动和传热现象.计算结果显示:三个尺度间温度场和速度场变化趋势一致,第二层搁架温度的平均偏差为1.31℃,空气速度的平均偏差为0.2 m/s.本系统多尺度方法可以准确地预测从超市空间到陈列柜内的温度和速度分布.The physical models from the supermarket scale,open vertical refrigerated display cabinet to the shelf scale were built based on the system multiscale method,and the fluid flow and heat transfer character of three different scales were analyzed. The computational results showed the temperature and velocity fields had very good agreement among three scales. The average deviations of temperature and air velocity for the second shelf were 1. 31 ℃ and 0. 2 m/ s,respectively. The multiscale method of the proposed system could correctly predict the temperature and velocity distribution from the supermarket space to inside of refrigerated display cabinet.

关 键 词：多尺度方法 温度分布 敞开立式冷藏陈列柜 

分 类 号：TB657[一般工业技术—制冷工程]