Large eddy simulation of wind pressure distribution on heterogeneous buildings in idealised urban models

Ahmad Faiz Mohammad, Sheikh Ahmad Zaki, Mohamed Sukri Mat Ali, Hagishima Aya, Azli Abdul Razak, Masataka Shirakashi, Norio Arai

研究成果: ジャーナルへの寄稿会議記事査読

8 被引用数 (Scopus)

抄録

In a typical urban area where buildings are built in a cluster with random spacing, the distribution of the wind pressure on a building is influenced by interference effects from neighbouring buildings, which could ultimately affect the wind-induced ventilation across the building. Large-eddy simulations (LESs) were conducted for six cases of staggered random arrays with various packing densities (λp). In addition, the heterogeneity of a typical urban surface was represented by buildings of different heights. Each type of building had a different aspect ratio αP (the ratio of the front area to the planar area of the building), which ranged between 0.84 (low-rise building) and 3.76 (high-rise building). The LES results showed that high-rise buildings (i.e. aP > 3.0) were less obstructed from the approaching flow because they had higher aspect ratios than the low-rise buildings (i.e. aP < 2.64). This was also because of their positions immediately behind the low-rise buildings. In dense arrays (i.e. lP > 0.250), the pressure drag was dominated by high-rise buildings by up to 55%. These findings will be beneficial in a study of the mean pressure distribution of clustered buildings. Although the results of this study were exclusive to random staggered arrays, they are an important addition to the existing literature on the study of wind-induced ventilation in urban areas.

本文言語英語
ページ(範囲)3055-3060
ページ数6
ジャーナルEnergy Procedia
78
DOI
出版ステータス出版済み - 11月 1 2015
イベント6th International Building Physics Conference, IBPC 2015 - Torino, イタリア
継続期間: 6月 14 20156月 17 2015

!!!All Science Journal Classification (ASJC) codes

  • エネルギー(全般)

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