CLC number: TU318.1
On-line Access: 2017-10-06
Received: 2016-10-21
Revision Accepted: 2017-02-21
Crosschecked: 2017-09-07
Cited: 0
Clicked: 6399
Wei Ding, Yasushi Uematsu. Large eddy simulation of unsteady aerodynamic behavior of long-span vaulted roofs[J]. Journal of Zhejiang University Science A, 2017, 18(10): 793-806.
@article{title="Large eddy simulation of unsteady aerodynamic behavior of long-span vaulted roofs",
author="Wei Ding, Yasushi Uematsu",
journal="Journal of Zhejiang University Science A",
volume="18",
number="10",
pages="793-806",
year="2017",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1600691"
}
%0 Journal Article
%T Large eddy simulation of unsteady aerodynamic behavior of long-span vaulted roofs
%A Wei Ding
%A Yasushi Uematsu
%J Journal of Zhejiang University SCIENCE A
%V 18
%N 10
%P 793-806
%@ 1673-565X
%D 2017
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1600691
TY - JOUR
T1 - Large eddy simulation of unsteady aerodynamic behavior of long-span vaulted roofs
A1 - Wei Ding
A1 - Yasushi Uematsu
J0 - Journal of Zhejiang University Science A
VL - 18
IS - 10
SP - 793
EP - 806
%@ 1673-565X
Y1 - 2017
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1600691
Abstract: This paper discusses the unsteady aerodynamic behavior of long-span vaulted roofs. First, a forced vibration test in a turbulent boundary layer is conducted in a wind tunnel. The models are force vibrated in the first anti-symmetric mode to investigate the effects of wind speed, rise/span ratio, and the amplitude and frequency of forced vibration on the distributions of wind pressures and unsteady aerodynamic forces. Then, a large eddy simulation (LES) is carried out to clarify the physical mechanism of wind-roof interaction as well as to investigate the influences of a roof’s vibration on the flow field around the roof. From the results of the wind tunnel experiment and the LES, we discuss the characteristics of unsteady aerodynamic forces on a long-span vaulted roof over a wide range of the reduced frequency of vibration. The effect of unsteady aerodynamic forces on the dynamic response of the roof is also discussed. A comparison between the wind tunnel experiment and the LES indicates that the LES can be used effectively to evaluate the unsteady aerodynamic behavior.
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