Effect of wind and buoyancy interaction on single-sided ventilation in a building

Jinsoo Park, Xiang Sun, Jung Il Choi, Gwang Hoon Rhee

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


In this study, we performed numerical simulations of three-dimensional turbulent flows over an isolated building with a door-type opening by using a CFD model in order to investigate the combined effect of wind and buoyancy on windward single-sided ventilation. Positive and negative temperature differences between the inside and outside of the building were considered. The Archimedes number (Ar) was introduced as an index for evaluating the interaction between buoyancy and wind effects. The interaction between the two opposing forces under a positive temperature difference was found to be destructive, resulting in the combined effect reducing the volume flow rate. Furthermore, the wind effect was found to be dominant for Ar0.5<0.45, with the buoyancy effect beginning to increase at Ar0.5=0.2, and tending to be dominant for Ar0.5>0.45. The two effects were found to be fairly comparable at Ar0.5=0.45. The interaction between the two assisted forces under a negative temperature difference was always constructive, resulting in the combined effect reinforcing the ventilation for all the Archimedes numbers.

Original languageEnglish
Pages (from-to)380-389
Number of pages10
JournalJournal of Wind Engineering and Industrial Aerodynamics
Publication statusPublished - 2017 Dec

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea grant funded by the Korean government (Ministry of Science and ICT) (Nos. NRF-2014R1A2A1A11053140 and NRF-20151009350 ).

Publisher Copyright:
© 2017 Elsevier Ltd

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Renewable Energy, Sustainability and the Environment
  • Mechanical Engineering


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