Effects of Green Roof on the Wind Field of a Low-rise Building

Wing Hong Onyx Wai, Wen Qing Hu, Chi Wai Li, Jie Min Zhan

Research output: Journal article publicationConference articleAcademic researchpeer-review


A three dimensional numerical wind tunnel based on the Navier-Stokes equations for viscous, incompressible fluid and LES method is established. Incoming wind field is generated based on the AIJ guidelines (2004). The numerical wind tunnel is validated against experimental results. A low-rise building with green roof is tested in the numerical wind tunnel. The results show that the green roof reduces the drag force of the building, cuts down the fluctuation near the roof, but has insignificant effect on the time-Averaged velocity field.
Original languageEnglish
Pages (from-to)405-409
Number of pages5
JournalProcedia Engineering
Publication statusPublished - 1 Jan 2015
Event7th International Conference on Fluid Mechanics, ICFM 2015 - Qingdao, China
Duration: 24 May 201527 May 2015


  • green roof
  • LES method
  • low-rise building
  • porous media

ASJC Scopus subject areas

  • General Engineering


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