Utilizing CFD-Simulations to Assess Flow-Induced Vibrations of Slender Beams in Cross-Flow |
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| Authors: | Johannes Strecha Herbert Steinrück |
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| Institution: | Vienna University of Technology, Institute of Fluid Mechanics and Heat Transfer, Resselgasse 3, 1040 Vienna |
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| Abstract: | Flow-induced vibrations of a slender U-beam in cross-flow are assessed, using the proprietary CFD-solver ANSYS-CFX. The U-beam has two degrees of freedom: heaving motion and rotation. The flow- and motion-governing equations are solved together, using an iterative coupling method. We find, that using this iterative coupling does not ensure a valid long-time behaviour of the solution. The results of free vibration simulations would allow investigation of the excitation mechanisms. But for determining possibility of large amplitude vibrations, methods relying on forced motion are deemed more promising. (© 2013 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) |
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