Evaluation of buoyancy-driven ventilation in atrium buildings using computational fluid dynamics and reduced-scale air model

Pei Chun Liu, Hsien Te Lin, Jung Hua Chou

研究成果: Article同行評審

70 引文 斯高帕斯(Scopus)

摘要

This research focuses on developing a reliable methodology for predicting the performance of buoyancy-driven ventilation in atrium buildings during the design stage using both computational fluid dynamics (CFD) and scale model tests. The results show several features. First, the agreement between CFD simulation and measurement results in the heated zone is better with rng k-ε and zero-equation turbulent schemes; whereas, in the atrium space, the laminar and zero-equation CFD models provide better results. Second, the external ambient temperature has a larger effect on the temperature distribution in the atrium space than the thermal load inside the building. Third, the position of the stack openings that create a direct ventilation path can improve the internal thermal environment. The size of the stack openings also affects the temperature distribution in the atrium space. Lastly, due to the small temperature difference in hot and humid climates, a buoyancy-only ventilation strategy is not very effective in such a situation. That is, when a low-rise atrium building is situated in a hot and humid environment, additional efforts such as wind-driven ventilation, wind-buoyancy ventilation or mechanically driven ventilation will be necessary to achieve the thermal comfort desired.

原文English
頁(從 - 到)1970-1979
頁數10
期刊Building and Environment
44
發行號9
DOIs
出版狀態Published - 2009 9月

All Science Journal Classification (ASJC) codes

  • 環境工程
  • 土木與結構工程
  • 地理、規劃與發展
  • 建築與營造

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