CFD在温室室内环境研究中的应用

介绍了计算流体力学(CFD)仿真技术的基本理论和应用方法,认为CFD仿真主要包括前处理、求解和后处理3个步骤,且目前大多研究者采用将CFD数值模拟结果与测试数据进行对比的方法,验证应用所建CFD模型进行数值模拟的可行性。重点分析了CFD在国内外温室(冬季温室、夏季温室和日光温室)热环境研究中及温室流场(温室自然通风流场、有防护网温室流场和温室机械通风流场)中的应用现状。在此基础上,提出了今后利用CFD研究温室室内环境的方向:开展多种类型温室的研究,确定合适的边界条件,并对模拟结果的准确性进行评价;对我国不同地区、不同气候条件下的温室热环境开展CFD数值分析,使研究更系统、更完善;引入不同作物CFD模型,研究作物对温室小气候环境的影响,以实现更贴近实际精度的数值模拟。

The Application of Computational Fluid Dynamics(CFD)in the Study of Greenhouse Indoor Environment

The basic theory and application methods of Computational Fluid Dynamics(CFD) simulation technique were introduced,it hold that CFD simulation mainly includes three steps of pretreatment,solution and aftertreatment,and at present,most researchers compared CFD numerical simulation results with test data,to test and verify the feasibility of established CFD model in numerical simulation.What's more,the application status of CFD in thermal environment study of greenhouse at home and abroad(winter greenhouse,summer greenhouse and sunlight greenhouse) and greenhouse flow field(greenhouse natural ventilation flow field,protective screening greenhouse flow field,mechanical ventilation flow field) were analyzed emphatically.Based on this,the direction of studying greenhouse indoor environment using CFD in the future was proposed: developing all kinds of greenhouses,determining suitable boundary conditions,and the veracity of simulated results was evaluated;furthermore,developing CFD numerical analysis for greenhouse thermal environment under different areas and different climatic conditions,to make the study more systematic and more perfect;moreover,CFD models of different crops were introduced to study the effects of crops on greenhouse microclimate environment,to realize numerical simulation with more actual accuracy.