Abstract
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.
| Original language | English |
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| Title of host publication | OMAE 2016: 35th International Conference on Ocean, Offshore and Arctic Engineering, Busan, Korea, June 19-24, 2016 |
| Publisher | ASME |
| Number of pages | 7 |
| DOIs | |
| Publication status | Published - 2016 |
| Event | International Conference on Ocean_Offshore and Arctic Engineering - Duration: 19 Jun 2016 → … |
Conference
| Conference | International Conference on Ocean_Offshore and Arctic Engineering |
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| Period | 19/06/16 → … |
Keywords
- Navier–Stokes equations
- cylinders
- reynolds number
- vortex-induced vibration