Enhancement of city breathability with half open spaces in ideal urban street canyons

Chih-yung Wen, Yu Hsuan Juan, An Shik Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

53 Citations (Scopus)


The purpose of this study is therefore to conduct computational fluid dynamics simulations to examine the flow behavior of the aeration around the buildings, with and without an arcade design in an ideal situation in urban street canyons. The results suggest the effectiveness of adopting an arcade design to sustain a stable wind environment and improve the flow aeration over areas with urban street canyons. Computations are also carried out to examine the ventilation performance of the pedestrian pathway layer by varying the parameters of building height, canyon width, and height and width of the arcade. The simulated results are then further processed by using a multivariable regression analysis on a group of dimensionless parameters as well as visualization with the scaling law on arcade structures to facilitate a design for arcade buildings that would enhance city breathability. This correlation which uses multiple dimensionless parameters will act as a reference for future arcade designs.
Original languageEnglish
Pages (from-to)322-336
Number of pages15
JournalBuilding and Environment
Publication statusPublished - 1 Feb 2017


  • Arcade
  • City breathability
  • Computational fluid dynamics
  • Half open spaces
  • Urban street canyons

ASJC Scopus subject areas

  • Environmental Engineering
  • Geography, Planning and Development
  • Civil and Structural Engineering
  • Building and Construction

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