高大平房仓机械通风量优化数值模拟  

NUMERICAL SIMULATION AND OPTIMIZATION OF MECHANICAL AERATION VOLUME OF LARGE HORIZONTAL WAREHOUSE

作　　者：陈桂香[1] 岳龙飞[1] 张虎 林淼达[1] 

机构地区：[1]河南工业大学土木建筑学院,河南郑州450001 [2]河南工大设计研究院,河南郑州450001

出　　处：《河南工业大学学报（自然科学版）》2014年第4期86-90,共5页Journal of Henan University of Technology：Natural Science Edition

基　　金：粮食公益性行业科研专项(201413007);国家"十二五"科技支撑计划项目(2011BAD03B00);国家高技术研究发展计划(863计划)项目(2012AA101608)

摘　　要：选择合适的机械通风量有利于提高通风效果和减少能耗.以某平房仓为研究对象,在粮堆内热湿耦合传递数学模型的基础上,运用CFD数值模拟方法,以机械通风单位通风量作为变量,选取《储粮机械通风技术规程》中不同通风目的的两个临界通风量作为上限和下限,依次再选取8个不同单位通风量值,对这10个不同值进行数值模拟预测.针对两个临界通风量值产生的通风效果,分别从温度和粮食湿基水分进行对比分析,得出机械通风量与有效通风时间的变化曲线,研究表明降温时间与单位通风量大小大致呈反比,但非绝对的线性关系.Selecting proper mechanical aeration volume is beneficial to improving aeration effect and reducing energy consumption. Taking a horizontal warehouse as an example,we simulated and predicted the mechanical aeration volume of the horizontal warehouse based on a combined thermal and moisture transfer mathematical model of grain storage by using CFD numerical simulation method,selecting unit aeration volume as a variable factor,selecting two critical aeration volumes of different aeration purposes in Technical regulation of aeration for grain storage as an upper limit and a lower limit,and selecting ten different unit aeration volumes. According to the aeration effects of the two critical aeration volumes,we analyzed temperature and wet-base moisture of grain respectively to obtain the curve between the mechanical aeration and effective aeration time;and the results showed that the cooling time was substantially in inverse proportion to the unit aeration volume,but not absolute linear relationship.

关 键 词：高大平房仓 机械通风 CFD 

分 类 号：TS210.3[轻工技术与工程—粮食、油脂及植物蛋白工程]