摘要：Laminar flow past a circular cylinder with 3 small control rods is investigated by numerical simulation. This study is concerned with the suppression efficacy of vortex induced vibration by small control rods located around a main cylinder. The effects of the attack angle and rod-to-cylinder gap ratio on the hydrodynamics and vibration responses of the main cylinder are investigated. The attack angle of alpha = 45 degrees is performed as the critical angle for VIV suppression of 3 control rods. The 3 control rods have no effect, on VIV suppression when the attack angle is less than the critical angle. The 3 control rods have an excellent VIV suppression efficacy when the attack angle is larger than the critical angle. The transverse vibration frequency of the cylinder with 3 control rods is less than that for an isolated cylinder for all the configurations. The numerical results for the configurations of alpha = 45 degrees & 60 degrees, G/D = 0.6-1.2 show excellent suppression efficient among the cases investigated in this study. The best suppression efficient is found at alpha = 45 degrees, G/D = 0.9 for 3 control rods. 2 rods in behind of the main cylinder perform more efficient than that of 1 rod in front for VIV suppression as the gap ratio of G/D less than 1.0. (C) 2017 Elsevier Ltd. All rights reserved.

关键字：Laminar flow VIV suppression Control rods CFD FSI

ISSN号：0141-1187

卷、期、页：卷: 64 页: 169-183

发表日期：2017-03-01

影响因子：0.000000

收录情况：SCIE（科学引文索引网络版）,ESI（基本科学指标数据库）,EI（工程索引）

发表期刊名称：Applied Ocean Research

通讯作者：宋振华

第一作者：段梦兰,顾继俊

论文类型：期刊论文

论文概要：宋振华,段梦兰,顾继俊，Numerical investigation on the suppression of VIV for a circular cylinder by three small control rods，Applied Ocean Research，2017，卷: 64 页: 169-183

论文题目：Numerical investigation on the suppression of VIV for a circular cylinder by three small control rods