环流风机布置对温室内流场影响的CFD模拟  

CFD Simulation for Effect of Circulation Fans Arrangement on Flow Field in Greenhouse

作　　者：洪亚杰[1,2] 王新忠 李亮亮[1,2] 陈健 卢青 Hong Yajie;Wang Xinzhong;Li Liangliang;Chen Jian;Lu Qing(School of Agricultural Equipment Engineering,Jiangsu University,Zhenjiang 212013,China;Key Laboratory of Agricultural Equipment and Intelligent and High Technology Research in Jiangsu Province,Zhenjiang 212013,China)

机构地区：[1]江苏大学农业装备工程学院,江苏镇江212013 [2]江苏省农业装备与智能化高技术研究重点实验室,江苏镇江212013

出　　处：《农机化研究》2019年第10期180-185,共6页Journal of Agricultural Mechanization Research

基　　金：江苏省重点研发计划项目(BE2016323);昆山市科技计划项目(KN1504)

摘　　要：为了解大肩高连栋玻璃温室夏季机械通风时室内流场分布,提高机械通风的降温效果,建立了6m肩高温室机械通风工况下的CFD模型,并对模拟结果进行了试验验证,结果表明:模拟值和试验值的最大相对误差为6. 70%,平均相对误差为2. 87%,显示CFD数值模型有效。在CFD模型基础上,进一步对不同环流风机布置下机械通风的降温效果进行了分析,结果表明:使用环流风机可提高机械通风的降温范围,在湿帘风机方向上实现气流的"接力",温室作物冠层南北温度差减小0. 5℃,32℃以下区域增加了20%;在环流风机安装方向上,不同横向截面上反向布置时室内冷热空气混合更好,室内温度分布更加均匀。In order to understand the distribution of indoor flow field during mechanical ventilation of greenhouse in summer and improve the cooling effect of mechanical ventilation,a CFD model for mechanical ventilation of a 6m greenhouse was established,and the simulation results were verified by experiments.It showed that the maximum relative error of the simulated value and the experimental value was 6.70%,and the average relative error was 2.87%,which proved that the CFD numerical model was effective.Based on the model,the cooling effect of mechanical ventilation under different circulation fan arrangement was analyzed.It was concluded that the use of circulation fans could increase the cooling range of mechanical ventilation.The temperature difference in crop canopy from north to south decreased by 0.5℃,and the area below 32℃increased by 20%.In the installation direction of the circulation fan,the indoor hot and cold air mixed better and the indoor temperature distribution was more uniform in the reverse arrangement.

关 键 词：温室 流场 环流风机 CFD 

分 类 号：S625.5[农业科学—园艺学]