Simulation of vortex-induced vibrations of a cylinder using ANSYS CFX rigid body solver

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• 作者：Abubakar Izhar ; Arshad Hussain Qureshi ; Shahab Khushnood
• 关键词：Key wordsvortex ; induced vibrations ; rigid body solver ; flow ; induced vibrations ; fluid ; structure interaction
• 刊名：China Ocean Engineering
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：31
• 期：1
• 页码：79-90
• 全文大小：
• 刊物类别：Engineering
• 刊物主题：Offshore Engineering; Oceanography; Coastal Sciences; Fluid- and Aerodynamics; Marine & Freshwater Sciences; Numerical and Computational Physics, Simulation;
• 出版者：Chinese Ocean Engineering Society
• ISSN：2191-8945
• 卷排序：31

文摘

This article simulates the vortex-induced oscillations of a rigid circular cylinder with elastic support using the new ANSYS CFX rigid body solver. This solver requires no solid mesh to setup FSI (Fluid Structure Interaction) simulation. The two-way case was setup in CFX only. Specific mass of the cylinder and flow conditions were similar to previous experimental data with mass damping parameter equal to 0.04, specific mass of 1 and Reynolds number of 3800. Two dimensional simulations were setup. Both one-degree-of-freedom and two-degree-of-freedom cases were run and results were obtained for both cases with reasonable accuracy as compared with experimental results. Eight-figure XY trajectory and lock-in behavior were clearly captured. The obtained results were satisfactory.