Assessment of wind ventilation performance inside a street located within a dense urban area using exceedance probability (特集 乱流シミュレーションと流れの設計(TSFD))

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概要

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•    The present study aims to estimate the wind ventilation performance for pedestrian level domains from the air quality point of view. Four typical models of a densely built-up area were considered and numerically simulated in order to examine the effects of the geometry of such models on wind flow characteristics, which in turn affect the air quality, within the pedestrian domain of a street located within this area. The calculated flow fields were employed to estimate the exceedance probabilities within the study domain using air exchange rate within the domain. The air exchange rate represents air quality. The study has been applied to nine cities in Japan: Tokyo, Osaka, Sapporo, Niigata, Fukuoka, Nagoya, Sendai, Yokohama, and Kyoto, based on their mean wind velocity data. The results demonstrated that the exceedance probability analysis of the pedestrian wind environment is very important during the design stage of inhabited areas for the evaluation of pollutant-removal efficiency by the applied wind. Also, the calculated probabilities demonstrated substantial dependence on both the geometry of building arrays and the wind conditions of the nine cities. [This abstract is not included in the PDF]

• 東京大学の論文

著者

• 加藤 信介

  Institute of Industrial Science, University of Tokyo

• Ishida Yoshihiro

  Institute Of Industrial Science The University Of Tokyo

• Bady Mahmoud

  Graduate School of Engineering, The University of Tokyo

• Kato Shinsuke

  Institute of Industrial Science, The University of Tokyo

• Huang Hong

  Institute of Industrial Science, The University of Tokyo

• Takahashi Takeo

  Institute of Industrial Science, The University of Tokyo

• Huang Hong

  Institute Of Industrial Science The University Of Tokyo

• Kato Shinsuke

  The Univ. Of Tokyo Komaba Meguro-ku Tokyo Jpn

• Kato Shinsuke

  Institute Of Industrial Science The University Of Tokyo

• Kato Shinsuke

  Institute Of Industrial Science University Of Tokyo

• Takahashi Takeo

  Institute Of Industrial Science The University Of Tokyo

• Takahashi Takeo

  Institute For Cardiovascular Diseases Tokyo Ika-shika National University

• 石田 義洋

  Institute of Industrial Science, The University of Tokyo

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