Strathprints logo
Strathprints Home | Open Access | Browse | Search | User area | Copyright | Help | Library Home | SUPrimo

Numerical simulation of the airflow–rivulet interaction associated with the rain-wind induced vibration phenomenon

Taylor, Ian and Robertson, Andrew Colin (2011) Numerical simulation of the airflow–rivulet interaction associated with the rain-wind induced vibration phenomenon. Journal of Wind Engineering and Industrial Aerodynamics, 99 (9). pp. 931-944. ISSN 0167-6105

[img] Microsoft Word - Draft Version
Download (3277Kb)

    Abstract

    Rain-wind induced vibration is an aeroelastic phenomenon that occurs on the inclined cables of cable-stayed bridges. The vibrations are believed to be caused by a complicated nonlinear interaction between rivulets of rain water that run down the cables and the wind loading on the cables due to the unsteady aerodynamic flow field. Recent research at the University of Strathclyde has been to develop a numerical method to simulate the influence of the external air flow on the rivulet dynamics and vice versa, the results of which can be used to assess the importance of the water rivulets on the instability. The numerical approach for the first time couples a Discrete Vortex Method solver to determine the external flow field and unsteady aerodynamic loading, and a pseudo-spectral solver based on lubrication theory to model the evolution and growth of the water rivulets on the cable surface under external loading. The results of the coupled model are used to assess the effects of various loading combinations, and importantly are consistent with previous full scale and experimental observations of rain-wind induced vibration, providing new information about the underlying physical mechanisms of the instability.

    Item type: Article
    ID code: 31461
    Keywords: numerical simulation, airflow-rivulet interaction , rain , vibration, Mechanical engineering and machinery, Bridge engineering, Civil and Structural Engineering, Mechanical Engineering, Renewable Energy, Sustainability and the Environment
    Subjects: Technology > Mechanical engineering and machinery
    Technology > Bridge engineering
    Department: Faculty of Engineering > Mechanical and Aerospace Engineering
    Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 09 Jun 2011 16:23
    Last modified: 11 Apr 2014 08:20
    URI: http://strathprints.strath.ac.uk/id/eprint/31461

    Actions (login required)

    View Item

    Fulltext Downloads: