深水隔水管涡激振动CFD预测及疲劳评估

IF 0.7 Q4 ENGINEERING, OCEAN

Ocean Systems Engineering-An International Journal Pub Date : 2016-12-25 DOI:10.12989/OSE.2016.6.4.325

Chetna Kamble, Hamn-Ching Chen

{"title":"深水隔水管涡激振动CFD预测及疲劳评估","authors":"Chetna Kamble, Hamn-Ching Chen","doi":"10.12989/OSE.2016.6.4.325","DOIUrl":null,"url":null,"abstract":". Using 3D computational fluid dynamics techniques in recent years have shed significant light on the Vortex Induced Vibrations (VIV) encountered by deep-water marine risers. The fatigue damage accumulated due to these vibrations has posed a great concern to the offshore industry. This paper aims to present an algorithm to predict the crossflow and inline fatigue damage for very long (L/D > 10 3 ) marine risers using a Finite-Analytical Navier-Stokes (FANS) technique coupled with a tensioned beam motion solver and rainflow counting fatigue module. Large Eddy Simulation (LES) method has been used to simulate the turbulence in the flow. An overset grid system is employed to mesh the riser geometry and the wake field around the riser. Risers from NDP (2003) and Miami (2006) experiments are used for simulation with uniform, linearly sheared and non-uniform (non-linearly sheared) current profiles. The simulation results including inline and crossflow motion, modal decomposition, spectral densities and fatigue damage rate are compared to the experimental data and useful conclusions are drawn.","PeriodicalId":44219,"journal":{"name":"Ocean Systems Engineering-An International Journal","volume":"26 1","pages":"325-344"},"PeriodicalIF":0.7000,"publicationDate":"2016-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"11","resultStr":"{\"title\":\"CFD prediction of vortex induced vibrations and fatigue assessment for deepwater marine risers\",\"authors\":\"Chetna Kamble, Hamn-Ching Chen\",\"doi\":\"10.12989/OSE.2016.6.4.325\",\"DOIUrl\":null,\"url\":null,\"abstract\":\". Using 3D computational fluid dynamics techniques in recent years have shed significant light on the Vortex Induced Vibrations (VIV) encountered by deep-water marine risers. The fatigue damage accumulated due to these vibrations has posed a great concern to the offshore industry. This paper aims to present an algorithm to predict the crossflow and inline fatigue damage for very long (L/D > 10 3 ) marine risers using a Finite-Analytical Navier-Stokes (FANS) technique coupled with a tensioned beam motion solver and rainflow counting fatigue module. Large Eddy Simulation (LES) method has been used to simulate the turbulence in the flow. An overset grid system is employed to mesh the riser geometry and the wake field around the riser. Risers from NDP (2003) and Miami (2006) experiments are used for simulation with uniform, linearly sheared and non-uniform (non-linearly sheared) current profiles. The simulation results including inline and crossflow motion, modal decomposition, spectral densities and fatigue damage rate are compared to the experimental data and useful conclusions are drawn.\",\"PeriodicalId\":44219,\"journal\":{\"name\":\"Ocean Systems Engineering-An International Journal\",\"volume\":\"26 1\",\"pages\":\"325-344\"},\"PeriodicalIF\":0.7000,\"publicationDate\":\"2016-12-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"11\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ocean Systems Engineering-An International Journal\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.12989/OSE.2016.6.4.325\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ENGINEERING, OCEAN\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ocean Systems Engineering-An International Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.12989/OSE.2016.6.4.325","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, OCEAN","Score":null,"Total":0}

引用次数: 11

摘要

．近年来，利用三维计算流体动力学技术对深水隔水管遇到的涡激振动(VIV)有了重要的研究。由于这些振动而累积的疲劳损伤引起了海上工业的极大关注。本文旨在提出一种算法，利用有限解析Navier-Stokes (FANS)技术，结合张拉梁运动求解器和雨流计数疲劳模块，预测超长(L/D bbbb10 3)船用隔水管的横流和管内疲劳损伤。采用大涡模拟(LES)方法对流动中的湍流进行了模拟。采用覆盖网格系统对隔水管的几何形状和隔水管周围的尾流场进行网格化。NDP(2003)和Miami(2006)实验中的立管被用于模拟均匀、线性剪切和非均匀(非线性剪切)电流剖面。将模拟结果与实验数据进行了比较，得到了有用的结论，包括内流和横流运动、模态分解、谱密度和疲劳损伤率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

CFD prediction of vortex induced vibrations and fatigue assessment for deepwater marine risers

. Using 3D computational fluid dynamics techniques in recent years have shed significant light on the Vortex Induced Vibrations (VIV) encountered by deep-water marine risers. The fatigue damage accumulated due to these vibrations has posed a great concern to the offshore industry. This paper aims to present an algorithm to predict the crossflow and inline fatigue damage for very long (L/D > 10 3 ) marine risers using a Finite-Analytical Navier-Stokes (FANS) technique coupled with a tensioned beam motion solver and rainflow counting fatigue module. Large Eddy Simulation (LES) method has been used to simulate the turbulence in the flow. An overset grid system is employed to mesh the riser geometry and the wake field around the riser. Risers from NDP (2003) and Miami (2006) experiments are used for simulation with uniform, linearly sheared and non-uniform (non-linearly sheared) current profiles. The simulation results including inline and crossflow motion, modal decomposition, spectral densities and fatigue damage rate are compared to the experimental data and useful conclusions are drawn.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Ocean Systems Engineering-An International Journal ENGINEERING, OCEAN-

自引率

22.20%

发文量

期刊介绍： The OCEAN SYSTEMS ENGINEERING focuses on the new research and development efforts to advance the understanding of sciences and technologies in ocean systems engineering. The main subject of the journal is the multi-disciplinary engineering of ocean systems. Areas covered by the journal include; * Undersea technologies: AUVs, submersible robot, manned/unmanned submersibles, remotely operated underwater vehicle, sensors, instrumentation, measurement, and ocean observing systems; * Ocean systems technologies: ocean structures and structural systems, design and production, ocean process and plant, fatigue, fracture, reliability and risk analysis, dynamics of ocean structure system, probabilistic dynamics analysis, fluid-structure interaction, ship motion and mooring system, and port engineering; * Ocean hydrodynamics and ocean renewable energy, wave mechanics, buoyancy and stability, sloshing, slamming, and seakeeping; * Multi-physics based engineering analysis, design and testing: underwater explosions and their effects on ocean vehicle systems, equipments, and surface ships, survivability and vulnerability, shock, impact and vibration; * Modeling and simulations; * Underwater acoustics technologies.