运用CFD模拟计算温室通风流量系数  

Confirmation the Flow Coefficient of Greenhouse Ventilation by Computational Fluid Dynamics Technique

作　　者：宫彬彬[1] 马承伟[2] 李政红[1] 

机构地区：[1]河北农业大学,河北保定071000 [2]中国农业大学,北京100083

出　　处：《农机化研究》2010年第10期11-15,74,共6页Journal of Agricultural Mechanization Research

基　　金：国家"十一五"科技支撑计划项目(2008BADA6B05);农业部农业产业技术体系建设项目(2009-2013)

摘　　要：在温室通风设计规范中,流量系数是通风量计算非常重要的参数。目前,流量系数的取值是以工民建结构设计规范中风荷载计算时的流量系数作为参考。由于计算目的不同,且温室有其不同于工民建筑的构造,温室通风量计算中流量系数的合理取值是需要深入研究的问题。为此,提出了运用CFD模拟计算方法,针对温室常见开窗形式(包括各种顶窗、侧窗窗洞口),建立包括窗洞口在内的区域气流流动的三维立体模型,对这些窗洞口附近的气流流动情况进行了数值模拟,并对模拟结果进行了系统的整理,得出了各种典型通风窗洞口的流量系数。The ventilation is one of the most important components in greenhouse design. The flow coefficient in the equations of ventilation refers to the architectural criterion at all times. With the quick development of greenhouse industry,the flow coefficient which is according with the greenhouse window becomes an exigent need when designing the quantity of ventilation. In this article,the flow coefficient according with the greenhouse windows is gained using the CFD technique which simulates the air flow at the window of greenhouse. part 3D CFD models for simulating the air flow at the greenhouse window are built. Then,the result from simulation contrasts the one from experiment,which confirms the pa-rameters when the CFD software simulates. The parameters contain boundary condition,flow model and control equation. The last,every part 3D CFD model of the greenhouse window modes is built for simulation. Then,the flow coefficients from the simulative results are sum up systemically.

关 键 词：温室 通风 流量系数 CFD 数值模拟 

分 类 号：S625.51[农业科学—园艺学]