Effect of an upstream building on natural ventilation performance of multi-story buildings

Dongjin Cui, Cheuk Ming Mak, Zhengtao Ai

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


For wind-induced natural ventilation, surrounding building's effect on a target building and the target building's envelopes are two main factors to affect the indoor air flow characteristics. In this work, Computational Fluid Dynamics (CFD) method was employed to model 18 different cases to investigate numerically the effect of an upstream building with two different heights to the target building with two different types of wing walls under two different wind directions (a wind incidence angle α=0° and α=45°). The results show the target building generally has a better natural ventilation performance when the wind obliquely incidents on the building. In addition, the ventilation performance of wing walls is highly dependent on the environment including the approaching wind directions, the orientation of the target building and height of the upstream building.
Original languageEnglish
Title of host publicationIndoor Air 2014 - 13th International Conference on Indoor Air Quality and Climate
PublisherInternational Society of Indoor Air Quality and Climate
Number of pages7
Publication statusPublished - 1 Jan 2014
Event13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014 - Hong Kong, Hong Kong
Duration: 7 Jul 201412 Jul 2014


Conference13th International Conference on Indoor Air Quality and Climate, Indoor Air 2014
Country/TerritoryHong Kong
CityHong Kong


  • An upstream building
  • Computational Fluid Dynamics (CFD)
  • Multi-story buildings
  • Wind-induced

ASJC Scopus subject areas

  • Pollution
  • Building and Construction
  • Health, Toxicology and Mutagenesis
  • Computer Science Applications

Cite this