集中送风联柜内空气流动与传热特性的CFD模拟
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摘要
本文采用双流体改进模型对集中送风联柜内空气的流动与换热特性进行模拟,分析了CFD模拟的陈列柜温度场分布特性,并与测试结果进行了对比分析。对比表明,数值模拟结果与实测结果十分吻合,CFD模拟的结果与实验测试结果的平均偏差和最大偏差的最大值分别是-0.7℃和-2.4℃。说明改进的双流体模型的CFD模拟是成功的。
A modified two-fluid model was adopted to simulate the air flow and heat transfer for double vertical display cabinet with central air supply. The temperature distribution for double display cabinet was analyzed and the predictions were compared with the experiment results. The Comparisons show that the numerical results agree well with the measurements. The maximum of the average temperature differences and the maximum temperature differences are-0.7 ℃ and-2.4 ℃, respectively. Therefore, the CFD simulation by the modified two-fluid model is successful.
A modified two-fluid model was adopted to simulate the air flow and heat transfer for double vertical display cabinet with central air supply. The temperature distribution for double display cabinet was analyzed and the predictions were compared with the experiment results. The Comparisons show that the numerical results agree well with the measurements. The maximum of the average temperature differences and the maximum temperature differences are-0.7 ℃ and-2.4 ℃, respectively. Therefore, the CFD simulation by the modified two-fluid model is successful.
引文
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[2]TAHIR A,BANSAL P K.MEPR versus EEPR valves in open supermarket refrigerated display cabinets[J].Applied Thermal Engineering,2005,25(2-3):191-203.
[3]FIELD B,LOTH E.Entrainment of refrigerated air curtains down a wall[J].Experimental Thermal and Fluid Science,2006,30:175-184.
[4]吴学红,王春煦,李伟平,等.敞开式食品冷藏陈列柜研究进展[J].食品与机械,2016,32(6):208-214.
[5]王佳男,谷波.立式制冷陈列柜设计方法分析[J].制冷技术,2012,32(2):62-65.
[6]孙钟皓.我国商用冷冻冷藏陈列柜的现状与发展[J].制冷技术,2005,25(1):14-17.
[7]余克志,丁国良,陈天及.陈列柜研究现状及分析[J].制冷空调与电力机械,2004,25(1):8-12,21.
[8]葛坦,李斯文,刘贵芳.冷冻冷藏陈列柜性能试验装置研制[J].制冷技术,2014,34(4):60-62,66.
[9]郑梦建,楼军,熊匀均,等.超市冷冻冷藏陈列柜改造方案探讨[J].制冷与空调,2015,15(6):55-58.
[10]傅涛,李君,王海林,等.果蔬用敞开式制冷陈列柜温湿度场分布特性实验[J].制冷学报,2014,35(4):34-41.
[11]李飞.环境空气流动对陈列柜风幕的影响[J].家电科技,2014(2):64-65.
[12]YU K Z,DING G L,CHEN T J.Experimental investigation on a vertical display cabinet with central air supply[J].Energy Conversion and Management,2009,50(9):2257-2265.
[13]陈天及,林文松,余克志.超市集中供冷风陈列柜系统的开发及研究[J].低温与超导,2008,36(2):31-35.
[14]袁培,刘键,付云飞,等.立式冷藏陈列柜食品温度预测计算模型[J].轻工学报,2016,31(6):69-73.
[15]袁培,付云飞,刘键,等.自然冷源陈列柜食品温度分布的数值模拟[J].低温与超导,2016,44(9):66-71.
[16]吴学红,赵鑫利,李伟平,等.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[J].郑州轻工业学院学报(自然科学版),2015,30(2):67-71.
[17]瞿星辉,潘晓涛,欧凌涛,等.封闭式风冷型冷冻陈列柜内温度场分析[J].制冷,2014,33(2):23-28.
[18]余克志,陈天及,谢堃,等.采用系统仿真方法数值模拟双层风幕立式陈列柜[J].制冷技术,2012,32(1):72-75.
[19]余克志,丁国良,陈天及.立式陈列柜风幕数值模拟的双流体模型及其改进[J].上海交通大学学报,2008,42(3):436-440.
[20]YU K Z,DING G L,CHEN T J.Modified two-fluid model for air curtains in open vertical display cabinets[J].International Journal of Refrigeration,2008,31(3):472-482.
[21]YU K Z,DING G L,CHEN T J.Simulation of air curtains for vertical display cases with a two-fluid model[J].Applied Thermal Engineering,2007,27(14/15):2583-2591.