双热源热压自然通风流场数值模拟研究.pdfVIP

23 10 建 筑 科 学 Vol23, No10 2007 10 BUILDING CIENCE Oct. 2007 [ ]2007) 1 2 3 1 隋学敏 , 官燕玲 , 李安桂 , 张 旭 ( 1. 同济大学 暖通空调及燃气研究所, 上海 201804; 2. 长安大学环境科学与工程学院, 陕西 西安710054; 3. 西安建筑科技大 学环境与市 工程学院, 陕西 西安710055) [ ] CFD , , , , [ ] ; ; ; ; ; + [ ] TU834. 1; TU834. 3 3 [ ] A Numerical imulation tudy on Flow Field of Thermal Natural Ventilation with Double Heating ources 1 2 3 1 SUI Xuemin , GUAN Yanling , LI Angui , ZHANG Xu ( 1. Heating , Ventilation, Airconditioning Gas Institute , Tongj i University , S ang ai 201804, C ina; 2. Sc ool of Environmental Science and Engineering , C angan University , Xian 710054,S anxi, C ina; 3.Sc ool of Environmental and Municipal Engineering, Xian University of Arc itecture and Tec nology , Xian 710055, S anxi, C ina) [Abstract] In this paper, for civil buildings with double heating sources and invariable indoor remaining heat, flow field of thermal natural ventilation was simulated under the conditions of different distances between two sourceswith the technique of CFD. The distinctions of temperature and velocity fields between single and double heating sources were analyzed, also influences of the distance on temperature and velocity fields, and their corresponding characteristic parameters were presented. As a result, it could be considered as a reference for the design of natural ventilation system in civil buildings. [Keywords] double heating sources; thermal natural ventilation; numerical simulation; flow field; neutral surface; effective thermal coefficient [ 3] , 1 , , ,