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Numerical Investigation Of Interference Effect On Octagonal Plan Shaped Tall Buildings

Submitted2016-09-05
Last Update2016-09-05
TitleNumerical Investigation Of Interference Effect On Octagonal Plan Shaped Tall Buildings
Author(s)Author #1
Author title:
Name: Sourav Hajra
Org: Post-Graduate Student, Department of Civil Engineering, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India.
Country:
Email:

Author #2
Author title:
Name: Sujit Kumar Dalui
Org: Assistant Professor, Department of Civil Engineering, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, India.
Country:
Email: sujit_dalui@rediffmail.com

Other Author(s)
Contact AuthorAuthor #2
Alt Email: sujit_dalui@rediffmail.com
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KeywordsInterference effect, Mean pressure coefficient, Tall building, Wind incidence angle, Vortex shedding
AbstractThe variation in the values of interference factor with change in spacing between the two interfering buildings and between interfering and principal building has been studied in this paper. Extensive numerical studies have been carried out with three numerical models (viz. k-Ɛ, SST and k-ω) for an isolated building for wind incidence angle of 0´┐Żusing Computational Fluid Dynamics (CFD) package ANSYS CFX. The interference cases are studied by k-Ɛ turbulence model only due to restriction of pages. Good agreement is observed between the results obtained by k-Ɛ, SST and k-ω models for the isolated case. Both interfering buildings are square in plan with a length scale of 1:300. Peculiar pressure distributions on certain faces are observed. Moreover, drastic change in pressure distribution is observed for the isolated and the interference cases. Finally, the flow pattern around the model is computed in order to explain the variation in pressure on different faces.
Paperview paper 3711.pdf (3029KB)

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