基于CFD的制退器边孔道夹角对效率影响规律研究  

Study on the effect of the angle of side channel on the efficiency of brake based on CFD

作　　者：刘宇豪 曲普[1] 李强[1] LIU Yuhao;QU Pu;LI Qiang(School of Mechanical and Electrical Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学机电工程学院,太原030051

出　　处：《兵器装备工程学报》2023年第S02期51-55,共5页Journal of Ordnance Equipment Engineering

基　　金：航空科学基金项目(2019290U0003)。

摘　　要：针对反作用式炮口制退器建立数学物理模型,采用计算流体力学软件进行数值模拟仿真计算。利用连续性、动量、能量控制方程通过动网格技术、湍流采用k-ω模型,计算4种边孔道夹角下炮口流场的结构与流动参数。采用后处理软件对4种工况其边孔道射流、壁面合力与炮膛合力进行比较,揭示了边孔道夹角对反作用式炮口制退器的影响规律。经求解边孔道40°夹角制退器效率最高可达42.3%,75°夹角其效率最低为31%,数值模拟结果可为反作用式炮口制退器边孔道设计与优化提供参考。The mathematical and physical model of the reaction muzzle brake was established,and the numerical simulation is carried out by using computational fluid dynamics software.The structure and flow parameters of the muzzle flow field under the angle of four side channels were calculated by using the continuity,momentum and energy governing equations,the dynamic grid technique and the turbulence model.The effect of the Angle of the side orifice on the reaction muzzle brake was revealed by comparing the side orifice jet,wall surface force and gun bore force in four working conditions with the post-processing software.The maximum efficiency of the brake at 40°was 42.3%,and the minimum was only 31%at 75°.The numerical simulation results can provide reference for the design and optimization of the side channel of the reaction muzzle brake.

关 键 词：射流 效率 膛口 反作用 边孔道夹角 

分 类 号：TJ012.2[兵器科学与技术—兵器发射理论与技术]