平板-碎冰-水耦合作用下的碎冰运动机理研究  

Research on Movement Mechanism of Crushed Ice Coupled with Plate and Water

作　　者：徐雪松 李鸿远 吴嘉蒙[2] 徐莹 倪宝玉[1] XU Xuesong;LI Hongyuan;WU Jiameng;XU Ying;NI Baoyu(College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China;Marine Design and Research Institute of China,Shanghai 200011,China)

机构地区：[1]哈尔滨工程大学船舶工程学院,哈尔滨150001 [2]中国船舶及海洋工程设计研究院,上海200011

出　　处：《中国造船》2023年第2期95-103,共9页Shipbuilding of China

基　　金：国家自然科学基金项目(52192690,52192693,51979051,51979056)。

摘　　要：为了模拟碎冰对工程结构物作用的典型场景,选择平板作为研究对象,采用欧拉多相流和离散元模型(CFD-DEM耦合方法),计算不同倾角和速度的平板在不同密集度碎冰中运动时的阻力,对碎冰的运动特性进行分析。提出了堆积、滑移、翻转和跟随这4种碎冰运动模式,并观察了碎冰“力链”现象,得到平板阻力和碎冰运动模式受平板倾角和碎冰密集度的影响规律。在碎冰高密集度和平板大倾角情况下,阻力会急剧增加。研究成果可为碎冰区域大型结构物设计提供参考。In order to simulate typical action scenarios between crushed ice and engineering structures,a plate is taken as the research object with Eulerian multiphase flow and discrete element model(CFD-DEM coupling method)adopted.Resistance of the plate with various inclination angles and speed is calculated when sailing in different densities of crushed ice.Movement characteristics of crushed ice are analyzed,and four movement modes,i.e.,pile,slip,flip,and follow,are proposed.It is concluded that the resistance of the plate and the mode of moving crushed ice are greatly affected on by the tilt angle of the plate,while increasing crushed ice density will strengthen all movement modes.In the case of high density of crushed ice and low plate inclination angle,the resistance will be increased sharply due to accumulation of crushed ice and"force chain"of crushed ice.The research work may provide a reference for the design of large structures in crushed ice area.

关 键 词：平板结构 碎冰 CFD-DEM耦合方法 冰阻力 运动机理 

分 类 号：U661.1[交通运输工程—船舶及航道工程]