How many surrounding buildings should be included in simulating wind flow around a building?

Sumei Liu, Wuxuan Pan, Hao Zhang, Xionglei Cheng, Zhengwei Long, Qingyan Chen

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Study of wind flow around a building in an urban community is important for natural ventilation, pedestrian comfort, and air pollutant dispersion. A CFD study was conducted to explore the influence of surrounding buildings on the wind flow around the building with different geometrical models. The models differ on the geometrical details around the building. The results show that the surrounding buildings had a considerable impact on the wind flow around the building due to the sheltering and Venturi effect. Excluding the urban environment in the computational domain could lead to an overestimation of the wind speed and pressure difference with 85% and 200%, respectively. The predicted wind speed and pressure distributions improved with the increase of the details of building structures in the surroundings. To achieve acceptable results, a minimum of three times of the length scale (the length scale is the largest dimension of the building) within the radius of the buildings should have detailed building structures in the CFD simulation.

Original languageEnglish
Title of host publication15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018
PublisherInternational Society of Indoor Air Quality and Climate
ISBN (Electronic)9781713826514
Publication statusPublished - 2018
Event15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018 - Philadelphia, United States
Duration: 22 Jul 201827 Jul 2018

Publication series

Name15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018

Conference

Conference15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018
Country/TerritoryUnited States
CityPhiladelphia
Period22/07/1827/07/18

Keywords

  • CFD
  • Field measurements
  • Full-scale model
  • Surroundings
  • Urban wind flow

ASJC Scopus subject areas

  • Pollution

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