Numerical Investigation of the Multiphase Flow Originating from the Muzzle of Submerged Parallel Guns

作     者：Dongxiao Zhang Lin Lu Xiaobin Qi Xuepu Yan Cisong Gao Yanxiao Hu 

作者机构：School of Mechatronics EngineeringNorth University of ChinaTaiyuan030051China School of Marine Science and TechnologyNorthwestern Polytechnical UniversityXi’an710072China Northwest Institute of Mechanical Electrical EngineeringXianyang712099China 

出 版 物：《Fluid Dynamics & Materials Processing》 (流体力学与材料加工（英文）)

年 卷 期：2023年第19卷第10期

页      面：2707-2728页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：This work is supported by the National Natural Science Foundation of China(Grant No.52201385) the Natural Science Foundation of Shanxi Province(Grant No.20210302123023) the Shanxi Scholarship Council of China(Grant No.2020-106) 

主　　题：Submerged parallel launch cavity evolution numerical simulation muzzle flow fields 

摘      要：A two-dimensional model,employing a dynamic mesh technology,is used to simulate numerically the transient multiphaseflowfield produced by two submerged parallel *** a grid refinement study ensuring grid inde-pendence,five different conditions are considered to assess the evolution of cavitation occurring in proximity to the gun *** simulation results show thatflow interference is enabled when the distance between the par-allel barrels is relatively small;accordingly,the generation and evolution of the vapor cavity becomes more *** means of the Q criterion for vorticity detection,it is shown that cavitation causes the generation of vorticity and the evolution of the vapor cavity can result in an asymmetric distribution of vorticity for a certain distance of the *** particular,the evolution of the vapor cavity can hinder the expansion of the gas and force it toflow outward,while an asymmetric distribution of vorticity can lead to a gas jetflowing outward and rotating simultaneously.