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Numerical investigation on the drag reduction properties of a suction controlled high-rise building

Numerical investigation on the drag reduction properties of a suction controlled high-rise building To reduce the wind-induced drag and improve the wind-resistance performance of a high-rise building, steady suction control is introduced into the building structure. Based on validation of the numerical methods by experiment with suction control over the flow separation of a 3D backward-facing step, the Reynolds stress equation model is used to investigate the drag reduction (DR) properties of a high-rise building whose side faces are controlled by all-height suction. Effects of the orifice geometrical parameters and suction flux parameters on the DR and the separation control are analyzed, and the detailed flow fields are shown to clarify the mechanism of suction control. The results indicate that suction control is very effective in reducing the wind loads on the high-rise building model, and only the dimensionless suction flux dominates. Lastly, the power consumed and the counterforce induced by suction are discussed, the suction models become the “zero-drag” model under certain suction angles. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Zhejiang University - Science A Springer Journals

Numerical investigation on the drag reduction properties of a suction controlled high-rise building

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References (13)

Publisher
Springer Journals
Copyright
Copyright © 2010 by Zhejiang University and Springer-Verlag Berlin Heidelberg
Subject
Engineering; Industrial Chemistry/Chemical Engineering; Classical Continuum Physics; Civil Engineering; Mechanical Engineering
ISSN
1673-565X
eISSN
1862-1775
DOI
10.1631/jzus.A0900593
Publisher site
See Article on Publisher Site

Abstract

To reduce the wind-induced drag and improve the wind-resistance performance of a high-rise building, steady suction control is introduced into the building structure. Based on validation of the numerical methods by experiment with suction control over the flow separation of a 3D backward-facing step, the Reynolds stress equation model is used to investigate the drag reduction (DR) properties of a high-rise building whose side faces are controlled by all-height suction. Effects of the orifice geometrical parameters and suction flux parameters on the DR and the separation control are analyzed, and the detailed flow fields are shown to clarify the mechanism of suction control. The results indicate that suction control is very effective in reducing the wind loads on the high-rise building model, and only the dimensionless suction flux dominates. Lastly, the power consumed and the counterforce induced by suction are discussed, the suction models become the “zero-drag” model under certain suction angles.

Journal

Journal of Zhejiang University - Science A – Springer Journals

Published: Jul 1, 2010

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