Numerical investigations of the effects of spanwise grooves on the suppression of vortex-induced vibration of a flexible cylinder

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures Pub Date : 2024-01-03 DOI:10.1016/j.marstruc.2023.103569

Bo Han , Luchun Yang , Weiwen Zhao , Decheng Wan

{"title":"Numerical investigations of the effects of spanwise grooves on the suppression of vortex-induced vibration of a flexible cylinder","authors":"Bo Han , Luchun Yang , Weiwen Zhao , Decheng Wan","doi":"10.1016/j.marstruc.2023.103569","DOIUrl":null,"url":null,"abstract":"<div>Numerical investigations of Vortex-induced Vibration (VIV) suppression of a flexible cylinder with spanwise grooves in the uniform flow have been conducted by viv3D-FOAM-SJTU solver, which imports the thick strip model into OpenFOAM. The Reynolds-averaged Navier-Stokes (RANS) method is adopted to calculate hydrodynamic forces at each fluid strip. The vibrations of cylinder are solved through the Euler-Bernoulli bending beam hypothesis and the Finite Element Method (FEM) in two directions. During simulations, four spanwise grooves are arranged equally around the cylinder with an interval of 90° at two configurations. The spanwise groove keeps a constant width of w = 0.2D and a variable groove depth among 0.08D, 0.12D and 0.16D. Specific comparisons on Root Mean Square (RMS) vibration displacements, vibration modal responses, vibration frequency responses and vortex structures are conducted to analyze suppression effects of the spanwise grooves. Numerical studies indicate that the appropriate choose of groove geometry and arrangement can effectively reduce both crossflow and inline VIV responses.</div>","PeriodicalId":49879,"journal":{"name":"Marine Structures","volume":null,"pages":null},"PeriodicalIF":4.0000,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Marine Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0951833923002022","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}

引用次数: 0

Abstract

Numerical investigations of Vortex-induced Vibration (VIV) suppression of a flexible cylinder with spanwise grooves in the uniform flow have been conducted by viv3D-FOAM-SJTU solver, which imports the thick strip model into OpenFOAM. The Reynolds-averaged Navier-Stokes (RANS) method is adopted to calculate hydrodynamic forces at each fluid strip. The vibrations of cylinder are solved through the Euler-Bernoulli bending beam hypothesis and the Finite Element Method (FEM) in two directions. During simulations, four spanwise grooves are arranged equally around the cylinder with an interval of 90° at two configurations. The spanwise groove keeps a constant width of w = 0.2D and a variable groove depth among 0.08D, 0.12D and 0.16D. Specific comparisons on Root Mean Square (RMS) vibration displacements, vibration modal responses, vibration frequency responses and vortex structures are conducted to analyze suppression effects of the spanwise grooves. Numerical studies indicate that the appropriate choose of groove geometry and arrangement can effectively reduce both crossflow and inline VIV responses.

查看原文本刊更多论文

跨向沟槽对抑制柔性圆柱体涡致振动影响的数值研究

viv3D-FOAM-SJTU 求解器将厚条带模型导入 OpenFOAM，对均匀流中带有跨向沟槽的柔性圆柱体的涡流诱导振动（VIV）抑制进行了数值研究。采用雷诺平均纳维-斯托克斯（RANS）方法计算每个流体条带上的流体动力。圆柱体的振动通过欧拉-伯努利弯曲梁假设和有限元法（FEM）在两个方向上求解。在模拟过程中，四个跨向凹槽以 90° 的间隔围绕圆柱体平均布置在两种配置上。跨向凹槽保持恒定宽度 w = 0.2D，凹槽深度在 0.08D、0.12D 和 0.16D 之间变化。对振动位移均方根（RMS）、振动模态响应、振动频率响应和涡流结构进行了具体比较，以分析跨向沟槽的抑制效果。数值研究表明，适当选择沟槽的几何形状和排列方式可有效降低横流和内联 VIV 响应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Marine Structures 工程技术-工程：海洋

CiteScore

8.70

自引率

7.70%

发文量

157

审稿时长

6.4 months

期刊介绍： This journal aims to provide a medium for presentation and discussion of the latest developments in research, design, fabrication and in-service experience relating to marine structures, i.e., all structures of steel, concrete, light alloy or composite construction having an interface with the sea, including ships, fixed and mobile offshore platforms, submarine and submersibles, pipelines, subsea systems for shallow and deep ocean operations and coastal structures such as piers.