[en] This paper studies the presence of the bistable flow activity around inclined cable models. It presents results from wind tunnel test on static original High-Density Polyethylene cable covers in a range of Reynolds numbers from the subcritical to the critical regime, inclined at angles of 90° (vertical), 60° and 45°. It has already been shown that, in the critical regime, turbulent transition in the boundary layers around a circular cylinder exhibits bistable behavior at zero inclination, i.e. the boundary layer on either side is intermittently turbulent or laminar, leading to intermittent asymmetry of the flow and resulting aerodynamic loads. The present wind tunnel tests consist in measuring the pressure patterns around inclined circular cylinders using numerous pressure taps. Bifurcation diagrams are created in order to quantify the occurrence of bistability and Proper Orthogonal Decomposition is used to identify the geometrical flow modes that are governed by the bistability. The results show that the bistable phenomenon is only identified in the Reynolds number range corresponding to the first transition between the TrBL0 and TrBL1 regimes. Furthermore, the inclination angle seems to have a significant impact on the energy of the flow mode related to unsteady asymmetric reattachment. This paper also treats the potential sensitivity of the aerodynamic drag and lift forces to the circularity defect of the covers and presents the positive impact of the helical fillet on controlling the bistable activity at a critical inclination angle of 60°.
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
Bibliography
Acampora, A., Macdonald, J.H.G., Georgakis, C.T., Nikitas, N., Identification of aeroelastic forces and static drag coefficients of a twin cable bridge stay from full-scale ambient vibration measurements. J. Wind Eng. Ind. Aerodyn. 124 (2014), 90–98.
Andrianne, T., Abdul Razak, N., Dimitriadis, G., Flow visualization and proper orthogonal decomposition of aeroelastic phenomena. Okamato, Satory, (eds.) Wind Tunnels, 2011, InTech. 978-953-307-295-1.
Benidir, Adel, Galop sec des câbles inclinés des haubans de pont: Étude expérimentale de la bi-stabilité en régime d’écoulement critique. (Thèse de doctorat), 2014, Ecole Centrale de Nantes (available at: https://hal-cstb.archives-ouvertes.fr/tel-02374404).
Benidir, A., Flamand, O., Dimitriadis, G., The impact of circularity defects on bridge stay cable dry galloping stability. J. Wind Eng. Ind. Aerodyn. 181:2018 (2018), 14–26.
Benidir, A., Flamand, O., Gaillet, L., Dimitriadis, G., Impact of roughness and circularity defect on bridge cables stability. J. Wind Eng. Ind. Aerodyn. 137 (2015), 1–13.
Cadot, O., Desai, A., Mittal, S., Saxena, S., Chandra, B., Statistics and dynamics of the boundary layer reattachments during the drag crisis transitions of a circular cylinder. Phys. Fluids, 27, 2015 014101-1.
Cheng, S., Irwin, P.A., Tanaka, H., Experimental study on the wind-induced vibration of a dry inclined cable—Part II: Proposed mechanisms. J. Wind Eng. Ind. Aerodyn. 96:12 (2008), 2254–2272.
Cheng, S., Larose, G.L., Savage, M.G., Tanaka, H., Irwin, P.A., Experimental study on the wind-induced vibration of a dry inclined cable—Part I: Phenomena. J. Wind Eng. Ind. Aerodyn. 96:12 (2008), 2231–2253.
Christiansen, H., Jakobsen, J.B., Macdonald, J.H.G., Larose, G.L., Bosch, H.R., Aerodynamics of a stay cable with helical fillets - Part I: Stability and load characteristics. J. Wind Eng. Ind. Aerodyn. xxx:2017 (2018), 1–16.
Dowell, E.H., Hall, K.C., Romanowski, M.C., Eigen mode analysis in unsteady aerodynamics: reduced order models. Appl. Mech. Rev. 50:6 (1998), 371–385.
Flamand, O., Rain wind induced vibration of cables. J. Wind Eng. Ind. Aerodyn. 57:2–3 (1995), 353–362.
Flamand, O., Benidir, A., Gaillet, L., Dimitriadis, G., 2014. Wind tunnel experiments on bridge stays cables protection tubes in dry galloping conditions: processing method for bistable phenomenon. In: Symposium on the Dynamics and Aerodynamics of Cables-SDAC, Copenhagen, Denmark.
Higuchi, H., Kim, H.J., Farell, C., On flow separation and reattachment around a circular cylinder at critical Reynolds numbers. J. Fluid Mech. 200 (1989), 149–171.
Jakobsen, J.B., Andersen, T.L., Macdonald, J.H.G., Nikitas, N., Larose, G.L., Savage, M.G., McAuliffe, B.R., Wind-induced response and excitation characteristics of an inclined cable model in the critical Reynolds number range. J. Wind Eng. Ind. Aerodyn. 110 (2012), 100–112.
Kleissl, K., Georgakis, C.T., Comparison of the aerodynamics of bridge cables with helical fillets and a pattern-indented surface. J. Wind Eng. Ind. Aerodyn. 104–106 (2012), 166–175.
Kumarasena, S., Jones, N.P., Irwin, P., Taylor, P., 2007. Wind-Induced Vibration of Stay Cables. Report No. FHWA-RD-05-083, the Federal Highway Administration. U.S. Department of Transportation.
Larose, G.L., Zan, S.J., 2001. The aerodynamic forces on stay cables of cable-stayed bridges in the critical Reynolds number range. In: Proceedings of the 4th International Symposium on Cable Dynamics. Montreal, Canada, May 28–30, pp. 77–84.
Lin, Y.-J., Miau, J.-J., Tu, J.-K., H.-W., Tsai, Nonstationary, three-dimensional aspects of flow around circular cylinder at critical Reynolds numbers. Amer. Inst. Aeronaut. Astronaut. J., 49(9), 2011, 2011.
Ma, W., Liu, Q., Macdonald, J.H.G., Yan, X., Zheng, Y., The effect of surface roughness onaerodynamic forces and vibrations for acircular cylinder in the critical Reynolds number range. J. Wind Eng. Ind. Aerodyn. 187 (2019), 61–72.
Ma, W., Liu, Q., Matsumoto, M., Excitation of the large-amplitude vibrations of a circular cylinder under normal wind conditions in the critical Reynolds number range. J. Fluids Struct. 84 (2019), 318–328.
Macdonald, J.H.G., Larose, G.L., A unified approach to aerodynamic damping and drag/lift instabilities, and its application to dry inclined cable galloping. J. Fluids Struct. 22 (2006), 229–252.
MacQueen, J.B., Some methods for classification and analysis of multivariate observations. Proceedings of the Fifth Berkeley Symposium on Mathematical Statistics and Probability, vol. 1, June 21–July 18, 1965 and December 27, 1965–January 7, 1966, 1967, University of California Press, University of California, USA, 281–297.
Matsumoto, M., Yagi, T., Hatsuda, H., Shima, T., Tanaka, M., Naito, H., Dry galloping characteristics and its mechanism of inclined/yawed cables. J. Wind Eng. Ind. Aerodyn. 98:6–7 (2010), 317–327.
Matteoni, G., Georgakis, C.T., Effects of bridge cable surface roughness and cross-sectional distortion on aerodynamic force coefficients. J. Wind Eng. Ind. Aerodyn. 104–106 (2012), 176–187.
McTavish, S., Raeesi, A., D'Auteuil, A., Yamauchi, K., Sato, H., An investigation of the mechanisms causing large-amplitude wind-induced vibrations in stay cables using unsteady surface pressure measurements. J. Wind Eng. Ind. Aerodyn. 183 (2018), 19–34.
Mehta, R.D., Pallis, J.M., 2001. Sports ball aerodynamics: effects of velocity, spin and surface roughness. In: Materials and Science in Sports Conference, Coronado, CA.
Nikitas, N., Macdonald, J.H.G., Aerodynamic forcing characteristics of dry cable galloping at critical Reynolds numbers. Eur. J. Mech. B Fluid 49 (2015), 243–249.
Nikitas, N., Macdonald, J.H.G., Jakobsen, J.B., Andersen, T.L., Critical Reynolds number and galloping instabilities: experiments on circular cylinders. Exp. Fluid 52:5 (2012), 1295–1306.
Schewe, G., On the force fluctuations acting on a circular cylinder in cross flow from subcritical up to trans-critical Reynolds numbers. J. Fluid Mech. 133:August (1983), 265–285.
Talley, S., Mungal, G., Flow Around Cactus-Shaped Cylinders. 2002, Center for Turbulence Research, 363–376 Annual Research Briefs 2002.
Vo, H.-D., Katsuchi, H., Yamada, H., Nishio, M., A wind tunnel study on control methods for cable dry-galloping. J. Front. Struct. Civil Eng. 10:1 (2016), 72–80.
Zdravkovich, M.M., Flow Around Circular Cylinder—Volume 1: Fundamentals. 1997, Oxford University Press Inc, New York, 163–198.
Zuo, D., Jones, N.P., Interpretation of field observations of wind and rain–wind induced stay cable vibrations. J. Wind Eng. Ind. Aerodyn. 98 (2010), 73–87.
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.
