Natural frequency ratio effect on 2 DOF flow induced vibration of cylindrical structures

Xiangxi Han, Chengbi Zhao, Youhong Tang, Xiaoming Chen, Wei Lin, Karl Sammut

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


    In this study, the vortex-induced vibration (VIV) of a circular cylinder at the low Reynolds number of 200 is simulated by a transient coupled fluid-structure interaction numerical model using the combination of FLUENT and ANSYS platforms. Considering VIV with low reduced damping parameters, the trend of the lift coefficient, the drag coefficient and the displacement of the cylinder are analyzed under different oscillating frequencies of the cylinder. The frequency ratio α is a very important parameter, which has been intensively investigated here. The typical nonlinear phenomena of lockedin, beat and phases switch can be captured successfully. The evolution of vortex shedding from the cylinder and the trajectory of the 2 DOF case with varied frequency ratio is also discussed.

    Original languageEnglish
    Title of host publicationParallel Computational Fluid Dynamics - 25th International Conference, ParCFD 2013, Revised Selected Papers
    Number of pages15
    ISBN (Print)9783642539619
    Publication statusPublished - 2014

    Publication series

    NameCommunications in Computer and Information Science
    ISSN (Print)1865-0929


    • Fluid-structure interaction
    • Vortex-induced vibration
    • Workbench system coupling


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