Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/10611
Title: Rainwater rivulets on a cable subject to wind
Authors: Lemaitre, C
Mahmud Alam, M
Hemon, P
De, LE
Zhou, Y
Keywords: Cylinder
Rain
Rivulet
Vibrations
Wind
Issue Date: 2006
Publisher: Elsevier France-Editions Scientifiques Medicales Elsevier
Source: Comptes rendus - Mecanique, 2006, v. 334, no. 3, p. 158-163 How to cite?
Journal: Comptes Rendus - Mecanique 
Abstract: Rainwater rivulets appear on inclined cables of cable-stayed bridges when wind and rain occur simultaneously. In a restricted range of parameters this is known to cause vibrations of high amplitudes on the cable. The mechanism underlying this effect is still under debate but the role of rainwater rivulets is certain. We use a standard lubrication model to analyse the dynamics of a water film on a cylinder under the effect of gravity and wind load. A simple criterion is then proposed for the appearance and position of rivulets, where the Froude number is the control parameter. Experiments with several geometries of cylinder covered with water in a wind tunnel show the evolution of the rivulets with the Froude number. Comparison of the prediction by the model with these experimental data shows that the main mechanism of rivulet formation and positioning is captured.
URI: http://hdl.handle.net/10397/10611
ISSN: 1631-0721
DOI: 10.1016/j.crme.2006.01.005
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