The simultaneous occurrence of rain and wind can generate rivulets of water on the cables of cable-stayed bridges. Under certain conditions the interaction of these rivulets with the local aerodynamic field may result in Rain Wind Induced Vibration (RWIV). A method to model this phenomenon computationally is currently under development at the University of Strathclyde. The current paper presents a two-dimensional model for the evolution of a thin film of water on the outer surface of a circular cylinder subject to pressure, shear, surface-tension and gravitational forces. Numerical simulations of the resulting evolution equation using a bespoke pseudo-spectral solver capture the formation of 'rivulets'; the geometry, location and growth rate of which are all in good agreement with previous studies.
|Title of host publication||Flow-induced vibration|
|Editors||I. Zolotarev, J. Horacek|
|Place of Publication||Prague|
|Number of pages||5|
|Publication status||Published - 3 Jul 2008|
|Event||9th International Conference on Flow-Induced Vibration - Prague|
Duration: 30 Jun 2008 → 3 Jul 2008
|Conference||9th International Conference on Flow-Induced Vibration|
|Period||30/06/08 → 3/07/08|
- rain-wind-induced vibration
- circular cylinder
- numerical simulation
- pseudo-spectral method
- thin-film approximation
Robertson, A. C., Taylor, I. J., Wilson, S. K., Duffy, B. R., & Sullivan, J. M. (2008). A model for the numerical simulation of rivulet evolution on a circular cylinder in an air flow. In I. Zolotarev, & J. Horacek (Eds.), Flow-induced vibration (pp. 693-698).