Preliminary Research and Application of Pressure and Buoyancy Natural Ventilation in Building using Computational Fluid Dynamics

• Main Authors: Chih-Hsiu Hsu, 徐志修
• Other Authors: 呂良正
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/60211619413326683858

碩士 === 國立臺灣大學 === 土木工程學研究所 === 96 === Because it is subtropics in Taiwan and it is good for natural ventilation, the purpose of the study is to understand the ventilation effect in a building. The object of the present work is to use computational fluid dynamics (CFD) to study the ventilation properties for three parts below: Part1 The Ventilation Effect under Cross Ventilation in Unit Plane Four examples, including different window locations, different wing wall lengths, different wing wall angles and different inlet airflow angles, are considered for internal flow. Part2 The Ventilation Effect under Buoyant Ventilation in Unit Profile Five examples, including three floors building, ten floors building, different chimney lengths, different fan magnitudes, and different opening configurations, are considered for thermal regulations. Part3 The Ventilation Effect under Cross Ventilation in multi-space The simulations were carried out using a multi-space and the comfortable index are PMV and PPD. Three examples, including different building exposures, different wing wall lengths and different wing wall angles, are considered for internal flow.