基于CFD的多弹性立管升力与阻力系数研究  

Study on Lift Coefficient and Drag Coefficient of Elastic Multi-riser Based on CFD

作　　者：黄维平[1] 陈海明[1] 

机构地区：[1]中国海洋大学山东省海洋工程重点实验室,山东青岛266100

出　　处：《船海工程》2011年第2期94-97,共4页Ship & Ocean Engineering

基　　金：国家自然科学基金(50639030);中国海洋大学山东省海洋工程重点实验室资助

摘　　要：基于Ansys11-Cfd软件模拟横向和竖向双立管6倍中心间距下立管的绕流情况,采用o-grid划分方法对立管处进行加密处理,使结果分析更加精确。针对6倍立管中心间距,横向和竖向排列情况,研究立管升力和拖曳力系数的变化,通过分析比较单立管和不同排列方式的双立管的升力和拖曳力系数,发现弹性情况与立管刚性情况存在很大的区别,弹性情况更符合真实情况。Based on Ansys11-CFD software,the current flowing around double horizontal marine risers and vertical marine risers were simulated.In order to make the simulation results more accurate,the o-grid generation method was used for the grid refinement of the risers.Lift coefficient and drag coefficient variations of the risers were analyzed,in the case of horizontal arrangement pattern and vertical arrangement pattern.Lift coefficient and drag coefficient of single riser and double riser with different arrangement patterns were compared.Comparison result showed that there is clear difference between flexible case and constant boundary case,which is more suitable with the actual situation.

关 键 词：顶张式立管 涡激振动 拖曳力系数 流固耦合 ANSYS-CFD 

分 类 号：U674.38[交通运输工程—船舶及航道工程]