TY - JOUR
T1 - Large eddy simulation of unsteady aerodynamic behavior of long-span vaulted roofs
AU - Ding, Wei
AU - Uematsu, Yasushi
N1 - Funding Information:
* Project supported by the Foundation of Jiangsu Collaborative Innovation Center for Building Energy Saving Construction Technology for Young Teachers (No. SJXTQ1515), China ORCID: Wei DING, http://orcid.org/0000-0002-5556-2364 © Zhejiang University and Springer-Verlag GmbH Germany 2017
Publisher Copyright:
© 2017, Zhejiang University and Springer-Verlag GmbH Germany.
PY - 2017/10/1
Y1 - 2017/10/1
N2 - 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.
AB - 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.
KW - Forced vibration test
KW - Large eddy simulation (LES)
KW - Long-span vaulted roof
KW - Unsteady aerodynamic behavior
KW - Wind tunnel experiment
UR - http://www.scopus.com/inward/record.url?scp=85031503730&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85031503730&partnerID=8YFLogxK
U2 - 10.1631/jzus.A1600691
DO - 10.1631/jzus.A1600691
M3 - Article
AN - SCOPUS:85031503730
VL - 18
SP - 793
EP - 806
JO - Journal of Zhejiang University: Science A
JF - Journal of Zhejiang University: Science A
SN - 1673-565X
IS - 10
ER -