钢筋混凝土地下粮仓准静态温度场数值模拟  

Quasistatic Temperature Field Simulation of Reinforced Concrete Underground Warehouse Grain

作　　者：陈桂香[1,2] 岳龙飞[1] 王振清[1,2] 王海涛[1] 张虎[2] 

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

出　　处：《中国粮油学报》2014年第3期79-83,共5页Journal of the Chinese Cereals and Oils Association

基　　金：863计划(2012AA101608);"十二五"国家科技支撑计划(2011BAD03B01)

摘　　要：研究准静态温度场可以为地下粮仓设计提供参考和依据。采用计算流体动力学(CFD)数值模拟方法,建立了大直径钢筋混凝土地下粮仓的物理模型,根据粮仓实体围护结构和地下环境条件,研究地下粮仓在不通风情况下温度场的变化规律,分析粮堆温度总体变化趋势和温度场与仓内几何尺寸关系等问题。研究结果表明随着时间变化,地下粮仓内粮堆温度由外到内逐渐趋向于所处恒温层温度,仓中通风道内空气柱能起到均匀降温的作用。Research on quasi - static temperature field can provide reference and basis for the design of under-ground warehouse. CFD mathematical models and simulation schemes have been established; the simulation area and boundary conditions had also been determined; dividing grids and selecting models according to underground ware-house structure and environmental temperature. In the paper, the CFD method has been adopted to simulate the tem- perature field of stored bulk grain in major diameter concrete underground warehouse without ventilation. The temper- ature fields and the temperature alterations with ambient temperature and geometric dimension relations were simula- ted by the methods described above. The results showed that the temperature of stored bulk grain tend was similar to the temperature of the constant temperature layer soil; moreover, the column of air duct of underground warehouse could help to cool the stored bulk grain in underground warehouse uniformly.

关 键 词：高分子磁性多孔微球 假丝酵母脂肪酶 固定化 催化活性 

分 类 号：S379[农业科学—农产品加工]