A Study on the Impact of the Wind Fields by the Ratio of Building Internal in High-rise Building District: Taking the Kaohsiung City as Example

• Main Authors: De-Wei Meng, 孟德威
• Other Authors: 周伯丞
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/tuwp87

碩士 === 樹德科技大學 === 建築與室內設計研究所 === 102 === With rapid economic development and increase of population in Kaohsiung in recent years, it is ineluctable that buildings are built higher and bigger. In the metropolitan area, the air flow is hampered by the high-rise buildings, which are densely built in the same region, seriously affecting the air flow distribution. The environmental air flow is subject to the shape and the heights of buildings, once being impeded, it is likely to become swirling turmoil, “street wind”, which has high wind speed, or become “high-rise building wind”, caused by screen effect. All the above will alternate how outdoor air flows, causing inconvenience for the residence in the area. To analyze and discuss this phenomenon, this research uses the high-rise building in Kaohsiung as its model, and adopts Computational Fluid Dynamics (CFD) flow simulation to simulate how air flows around high-rise buildings. The simulated factors include 1) south west wind in summer and north east wind in winter, 2) wind speed 1.91 m/s in summer and 1.66 m/s in winter, 3) different heights of buildings, which are 45m、60m、84m、150m. This research uses Computational Fluid Dynamics (CFD) to analyze the climate in Kaohsiung, and utilizes A Research on The feasibility of Air Ventilation Assessment, conducted by The Chinese University of Hong Kong, as a guideline to evaluate the impact and the benefits of different periods of natural air ventilation may have on different heights of high-rise buildings. By doing so, the efficacy of natural air ventilation of high-rise buildings could be predicted and can serve as a guideline for designers and users on architecture design planning.