Article (Scientific journals)
On the mechanism of divergent cable movement: Contribution of the bistable flow activity in the critical flow regime
Benidir, A.; Flamand, O.; Dimitriadis, Grigorios et al.
2022In Journal of Wind Engineering and Industrial Aerodynamics, 228, p. 105103
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Keywords :
Bistable flow activity; Critical flow regime; Divergent cable movement; Dynamic test; Wind tunnel; Bistable flow; Condition; Critical flow; Divergents; Dynamic tests; Flow regimes; Stayed cables; Civil and Structural Engineering; Renewable Energy, Sustainability and the Environment; Mechanical Engineering
Abstract :
[en] This paper studies the contribution of the bistable flow activity on the installation of incipient conditions to provoke divergent stayed-cable movement. The experiment consists of performing dynamic tests on a long (6.1 m) and genuine inclined and smooth-surfaced cable in a wind tunnel. The cable has an outer diameter of 0.219 m and is equipped with 128 pressure taps distributed on seven (7) rings. The range of the Reynolds numbers is covering the critical flow regime around a circular cylinder. The evolution of mean and instantaneous aerodynamic coefficients is discussed and Proper Orthogonal Modes of the pressure pattern are created. The results indicate that both transitory regimes in the critical flow regime could contribute to install cable instability incipient conditions. Seemingly, only the unsteady states in the critical flow regime appear to participate on imposing large cable displacement. The influence of the circularity defect on disturbing flow fields around the circular cylinder has also been confirmed. Furthermore, the bistable flow activity has been clearly identified to contribute strongly in the installation of large-amplitude wind-induced vibrations.
Disciplines :
Civil engineering
Aerospace & aeronautics engineering
Author, co-author :
Benidir, A.;  National Center for Integrated Studies and Research in Building (CNERIB), Souidania, Algeria
Flamand, O.;  CSTB, Nantes, France
Dimitriadis, Grigorios ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Science des matériaux métalliques
McTavish, S.;  National Research Council Canada, Ottawa, Canada
Yamauchi, K.;  IHI Corporation, Yokohama, Japan
Sato, H.;  IHI Infrastructure Systems Co., Ltd, Osaka, Japan
Language :
English
Title :
On the mechanism of divergent cable movement: Contribution of the bistable flow activity in the critical flow regime
Publication date :
September 2022
Journal title :
Journal of Wind Engineering and Industrial Aerodynamics
ISSN :
0167-6105
eISSN :
1872-8197
Publisher :
Elsevier B.V.
Volume :
228
Pages :
105103
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 August 2022

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