Aerodynamic Instability of Cables with Circular Appendages

  • S. Giappino
  • A. Manenti
  • S. MuggiascaEmail author
Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 27)


The present paper describes the aerodynamic study performed on a cable fitted with a circular tube (pipe) of comparable diameter. Experimental tests were carried out in the high velocity low turbulence test section of the Politecnico di Milano wind tunnel. Typical galloping instability was observed, due to asymmetry introduced by the fitting, but also a strong torsional instability occurred. This phenomenon is not generally significant for cables, but it can appear when fittings change substantially the shape of the cable: for this reason, the study included experimental tests on this instability.


Cable dynamics Galloping Wind tunnel Torsional instability 


  1. Belloli M, Giappino S, Morganti S, Muggiasca S, Zasso A (2015) Vortex induced vibrations at high Reynolds numbers on circular cylinders. Ocean Eng 94:140–154. Scholar
  2. Belloli M, Giappino S, Muggiasca S, Zasso A (2012) Force and wake analysis on a single circular cylinder subjected to vortex induced vibrations at high mass ratio and high Reynolds number. J Wind Eng Ind Aerodyn 103:96–106CrossRefGoogle Scholar
  3. Den Hartog JP (1932) Transmission line vibration due to sleet. Trans AIEE 51:1074–1076Google Scholar
  4. Matsumoto M, Yagi T, Hatsuda H, Shima T, Tanaka M, Naito H (2010) Dry galloping characteristics and its mechanism of inclined/yawed cables. J Wind Eng Ind Aerodyn 98(2010):317–327CrossRefGoogle Scholar
  5. Sumner D (2010) Two circular cylinders in cross-flow: a review. J Fluids Struct 26(6):849–899. Scholar
  6. Williamson CHK, Govardhan R (2004) Vortex-induced vibrations. Annu Rev Fluid Mech 36:413–455MathSciNetCrossRefGoogle Scholar
  7. Zhou Y, Mahbub Alam M (2016) Wake of two interacting circular cylinders: a review. Int J Heat Fluid Flow 62:510–537. Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringPolitecnico di MilanoMilanItaly
  2. 2.GVPM Wind Tunnel, Politecnico di MilanoMilanItaly

Personalised recommendations