摘要
为提高液仓晃荡数值模拟精度和效率,本文结合VOF和树形自适应网格,直接离散不可压粘性流体的NS方程,对于纵摇和水平外激励所引起的二维液体强迫晃荡进行数值模拟。将计算得到的几种工况下的自由表面升高,力和力矩同解析解、实验值进行了对比,验证了该数值方法对于此问题的有效性。通过网格自适应加密,不仅提高了计算效率,而且比势流解更为精确。
To improve the accuracy and efficiency of the numerical simulation of liquid sloshing,incompressible Navier-Stokes equations are directly discretized and coupled with the volume of fluid and adaptive quadtree-based algorithms,which are used to investigate the behavior of 2D fluid motion in rectangular tanks under rolling and horizontal excitations,respectively.The elevation,force,and pressure moment obtained by computations are compared with the theoretical and experimental values to validate the effectiveness of the numerical simulation in this study.Adaptive mesh refinement improves efficiency;moreover,it is more precise than the potential flow solution.
作者
赵勇
李靖
邹丽
赵延杰
ZHAO Yong;LI Jing;ZOU Li;ZHAO Yanjie(Naval Architecture and Ocean Engineering College,Dalian Maritime University,Dalian 116026,China;School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;School of Naval Architecture,State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,China;Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai 200240,China;Marine Defense Technology Innovation Center,China Ship Scientific Research Center,Wuxi 214082,China)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2019年第2期266-272,共7页
Journal of Harbin Engineering University
基金
国家自然科学基金项目(51679021)
博士后面上基金项目(2016M601294)
辽宁省自然科学基金项目(201602067)
关键词
晃荡
自适应网格
四叉树结构
VOF模型
数值模拟
N-S方程
sloshing
adaptive grids
quadtree structure
volume of fluid(VOF)
numerical simulation
Navier-Stokes equations
