置换通风模式下多元对流室内热与污染物输运  

Combined convective heat and pollutant removals in enclosures with different vented slots

作　　者：王磊[1] 赵福云[1] 蔡阳 汪维伟 王云鹤 杨国彪 WANG Lei;ZHAO Fuyun;CAI Yang;WANG Weiwei;WANG Yunhe;YANG Guobiao(School of Power and Mechanical Engineering,Wuhan University,Wuhan 430072,Hubei,China)

机构地区：[1]武汉大学动力与机械学院,湖北武汉430072

出　　处：《化工学报》2020年第S01期142-148,共7页CIESC Journal

基　　金：国家自然科学基金项目(51778504);国家重点研发计划“绿色建筑及建筑工业化”专项项目(2018YFC0705201);国家自然科学基金-中国核工业集团有限公司核技术创新联合基金项目(U1867221)。

摘　　要：通过数值模拟的手段研究不同进出口布置方式对置换通风模式下混合对流开口腔内热质输运过程的影响,并且利用流函数、热函数和质函数深入研究与揭示开口腔内热与气态污染物的输运过程与机理,系统分析了不同控制参数对开口腔内的气体流动结构和热质输运能力的影响。结果表明不同的进出口布置方式在开口腔内热和污染物的输运及其室内扩散范围上展现了相反的双重效果:进出口布置在两侧的方式具有更大的热与污染物输运能力;进口在两侧底部,出口位于顶部的布置方式在开口腔内具有更小的热与污染物扩散半径。研究结果对室内热与污染物排放和控制以及电子器件冷却有一定的借鉴意义。A numerical investigation of displacement ventilation on a heated and polluted strip within a partially open enclosure,having various locations of airflow inlet and outlet,is considered.The effects of different governing parameters on the fluid flow,heat and mass transfer were analyzed systematically.Results illustrated that the different arrangements of airflow inlet and outlet exhibit the dual effects on heat and mass transports and the radiuses of heat and mass dissipation within the enclosure.Both heat and mass transfer rates present larger values for the locations of inlet and outlet placed at the vertical sidewalls while they presents smaller radiuses of heat and mass dissipations for inlet and outlet placed at the two vertical and the top sidewalls,respectively.Results could be beneficial for heat and pollutant removals from the electronic boxes or building enclosures.

关 键 词：数值模拟 层流 传递过程 置换通风 进出口布置 开口通风腔室 

分 类 号：TU13[建筑科学—建筑理论]