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 gas-liquid 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.
2022,44(19): 12-17 收稿日期：2021-06-16
DOI：10.3404/j.issn.1672-7649.2022.19.003
分类号：U663.2
基金项目：国家自然科学基金资助项目（51809123）
作者简介：魏姗姗(1996-)，女，硕士研究生，从事流体力学性能研究
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