Dynamic torsional behaviour of tall building under wind loads using CFD approach
Date
2006
Authors
Nguyen, Cuong K.
Ngo, Tuan D.
Mendis, Priyan A.
Cheung, John C. K.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Conference paper
Citation
Proceedings of the 4th International Symosium on Computational Wind Engineering, 2006:
Statement of Responsibility
Conference Name
International Symosium on Computational Wind Engineering (4th : 2006 : Yokohama, Japan)
Abstract
The dynamic torsional behavior of rectangular tall buildings under wind loads has
been investigated using wind tunnel tests. It has been found that one of the main factors influencing
the dynamic torsional behavior of tall buildings is the dynamic characteristics of the wind
such as turbulence and wake excitation. In addition to that, the dynamic characteristics of the
building itself influence the torsional behavior. The Ansys CFX10 has been used to analyze the
flow over building model with the wind speed profile and turbulence profile generated from AS
1170.2 for the suburban terrain category. Different aspect ratios of rectangular tall buildings have
been studies from square to slab type structure. The dynamic torsional moment has been analyzed
from pressure distribution on surrounding surfaces of the rigid models of tall buildings. The torsional
moments are normalized in coefficient form with the maximum projected width and the
maximum projected area of the building. The numerical results are being comparable with the
experimental results from Cheung and Melbourne.
School/Discipline
School of Mechanical Engineering