Numerical investigation of vortex-induced vibration of a circular cylinder close to a plane boundary subject to oscillatory flow
This paper presents a numerical study of flow around an elastically mounted circular cylinder in close proximity to a plane boundary vibrating in the transverse and inline directions in an oscillatory flow. The Reynolds-Averaged Navier-Stokes (RANS) equations and the SST k-w turbulent equations are...
Published in: | Volume 2: CFD and VIV |
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Main Authors: | , , |
Other Authors: | , |
Format: | Conference Object |
Language: | English |
Published: |
U.S., ASME
2016
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Subjects: | |
Online Access: | http://handle.uws.edu.au:8081/1959.7/uws:36334 https://www.asme.org/events/omae https://doi.org/10.1115/OMAE2016-54338 |
Summary: | This paper presents a numerical study of flow around an elastically mounted circular cylinder in close proximity to a plane boundary vibrating in the transverse and inline directions in an oscillatory flow. The Reynolds-Averaged Navier-Stokes (RANS) equations and the SST k-w turbulent equations are solved using the Arbitrary Langrangian-Eulerian (ALE) scheme and Petrov-Galerkin Finite Element Method for simulating the flow. The equation of motion is solved using the fourth-order Runge-Kutta method to find the displacements of the cylinder in the transverse and incline directions. The numerical model is validated against the previous results of vortex-induced vibration of an isolated circular cylinder in both cross-flow and inline directions. The flow model is further extended to study the vortex-induced vibration of a cylinder near a plane boundary with a very small gap ratio (e/D) of 0.01, with D and e being the diameter and the gap between the cylinder and the plane boundary, respectively. Simulations are carried out for two Keulegan-Carpenter (KC) numbers of 5 and 10 and a wide range of reduced velocities. It is observed that both the KC number and the reduced velocity affect the vibration of the cylinder significantly. |
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