大型冷库内温度场的数值模拟与优化

发布时间：2018-05-07 05:08

本文选题：冷库 + 温度场　；参考：《食品与机械》2017年06期

【摘要】：以典型大型冷库作为研究对象,对冷库内外环境(包括空气幕在内)进行三维数值建模,并利用计算流体力学软件对冷库内温度场进行模拟研究,并将计算结果进行了实验验证。通过对结果分析可得:在稳态条件下,库内流场温度虽达到了要求的范围,但堆垛货物附近的温度场分布并不均匀,货物之间与库内其他区域存在着较明显的温差;在非稳态条件下,空气幕的送风速度对温度场的影响很大,当送风速度为8m/s时,库内温度场的波动较小,空气幕性能较好。在该基础上提出了今后可进一步优化的建议:改变库内空气的流动方式,改变货物的堆垛方式,降低货物堆垛高度,对影响空气幕性能的其他参数进行研究优化。
[Abstract]:Taking the typical large cold storage as the research object, the three-dimensional numerical modeling of the inside and outside environment (including air curtain) of the cold storage is carried out, and the temperature field in the cold storage is simulated by the computational fluid dynamics software. The calculated results are verified by experiments. Through the analysis of the results, it can be concluded that although the temperature of the flow field in the reservoir reaches the required range under the steady state condition, the distribution of the temperature field near the stacking cargo is not uniform, and there is a more obvious temperature difference between the goods and other areas in the reservoir; Under the unsteady condition, the velocity of air curtain has a great influence on the temperature field. When the velocity of air supply is 8m/s, the fluctuation of temperature field is small and the performance of air curtain is better. On this basis, some suggestions for further optimization are put forward: changing the flow mode of air in the storehouse, changing the stacking mode of the goods, reducing the stacking height of the cargo, and optimizing the other parameters that affect the performance of the air curtain.
【作者单位】：上海海洋大学食品学院;
【基金】：国家“十三五”重点研发项目(编号:2016YFD0400303) 上海市科委平台能力提升项目(编号:16DZ2280300)
【分类号】：TB657.1

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