the steger and warming flux vector splitting implicit scheme is used to numerically solve two dimensional reynolds averaged navier–stokes (rans) equations governing the vortex induced vibration of a flexible riser laterally supported by a spring and a damper. the k–ε model is used as turbulence model to simulate the turbulent flow in the wake of the riser. to update the new position of the rise...

In the present study, the author’s previous experimental investigations on the vortex induced vibration of uniform and tapered circular cylinders are numerically simulated. The circular cylinders have medium mass ratios (5.93, 6.1), low mass-damping parameters (0.0275, 0.0279) a mean diameter of 0.028m and an aspect ratio of about 14. A fully coupled two-way fluid-structure interaction (FSI) an...

Parallels between the dynamic response of flexible bridges under the action of wind and under the forces induced by crowds allow each field to inform the other. Wind-induced behaviour has been traditionally classified into categories such as flutter, galloping, vortex-induced vibration and buffeting. However, computational advances such as the vortex particle method have led to a more general p...

A numerical simulation of vortex-induced vibration of a 2-dimensional elastic circular cylinder with two degree of freedom under the uniform flow is calculated when Reynolds is 200. 2-dimensional incompressible Navier-Stokes equations are solved with the space-time finite element method, the equation of the cylinder motion is solved with the new explicit integral method and the mesh renew is ac...

Structural Health Monitoring System for Deepwater Risers with Vortex-induced Vibration: Nonlinear Modeling, Blind Identification Fatigue/Damage Estimation and Local Monitoring using Magnetic Flux Leakage

The flow-induced vibration (FIV) of a rectangular cylinder with side ratio 4 at Re = 300 is numerically investigated by two-dimensional spectral-element method. constrained to vibrate only in the cross-flow direction. effects mass and damping are studied. Boss typical FIV, vortex-induced (VIV), galloping were found. Although quasi-steady theory predicts that will not occur for 4:1 cylinder, we ...

Abstract Based on the existing fairing, 2D structure of fairing is improved. Through numerical simulation shape and height spoiler analysis comparison obtained data, with good vortex-induced vibration suppression designed. The results show that H = 6.5 mm’s semicircular 45° tail-angle middle line side has a effect suppressing vortex vibration.