基于OpenFOAM的楔形体入水问题研究  

Research on water entry of wedge bodies based on OpenFOAM

作　　者：魏姗姗 孙士艳 WEI Shan-shan;SUN Shi-yan(School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China)

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212100

出　　处：《舰船科学技术》2022年第19期12-17,共6页Ship Science and Technology

基　　金：国家自然科学基金资助项目(51809123)。

摘　　要：为了研究重力作用下,不同底升角的二维单楔形体和双楔形体匀速入水过程中的砰击压力分布,采用OpenFOAM开源软件建立基于粘流理论的CFD数值模型,采用有限体积法(FVM)离散由雷诺平均方程和连续性方程组成的控制方程组,采用流体体积法(VOF)来捕捉气液两相交界面。给出不同工况下的自由液面形状和楔形体表面砰击压力分布,并与前人基于势流理论的数值结果比对分析。研究结果表明,重力和底升角对砰击压力均有较为明显的影响,重力的作用与时间相关,双楔形体压力大于同底升角单楔形体压力。The water entry problem of a two dimensional wedge and double-wedge at different deadrise angles with gravity effect is investigated in the present paper.The CFD numerical model is established based on viscous flow theory through OpenFOAM software.The finite volume method(FVM)is used to discretize the governing equations set consisting of the average Reynolds equation and the continuity equation.The volume of fluid method(VOF)is used to capture the gasliquid two-phase intersection.Comparisons of the pressure distribution on the body surface and the free surface profile with those through boundary element method in potential flow theory are undertaken.The conclusions includes:The gravity and deadrise angle will both exert noticeable effects on the results,it takes time for the gravity to become prominent,and the pressure of double-wedge is larger than that of single wedge at the same deadrise angle.

关 键 词：OPENFOAM 双楔形体 粘流 重力影响 入水砰击 

分 类 号：U663.2[交通运输工程—船舶及航道工程]