基于Fluent的某小口径火炮炮口流场仿真及射手防护研究  

Research on Muzzle Flow Field Simulation and Shooter Protection of a Small Caliber Gun Based on Fluent

作　　者：薛滨 何永[1] 张海龙 XUE Bin;HE Yong;ZHANG Hai-long(School of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing 210000, China)

机构地区：[1]南京理工大学机械学院,江苏南京210000

出　　处：《指挥控制与仿真》2021年第6期88-93,共6页Command Control & Simulation

摘　　要：针对某小口径高射速火炮后坐力与无人战车不匹配的问题,采用了截短型身管,并设计了相应的炮口制退器结构。经炮口制退器优化后显示,挡板与y轴夹角为15°的炮口制退器性能最优。为研究此炮口制退器在射击时产生的超压与噪声对射手的影响,使用计算流体力学软件Fluent对炮口制退器周围区域进行了超压与噪声的数值模拟。仿真结果表明,随着接收点与炮口的距离变远,接收点的超压与噪声强度也在不断减小,在炮口制退器周围1m的区域范围内,射手应佩戴相应的防护用具。仿真结果有助于研究炮口冲击波特征,并为炮口附近射手的安全防护提供了参考。To solve the problem that the recoil force of a small caliber high rate of fire gun does not match the unmanned vehicle,the truncated barrel is adopted and the corresponding muzzle brake structure is designed.The optimized muzzle brake shows that the muzzle brake with an angle of 15 degrees between baffle and y axis has the best performance.In order to study the influence of overpressure and noise generated by the muzzle brake on the shooter,numerical simulation of overpressure and noise in the area around the muzzle brake was carried out by using computational fluid dynamics software Fluent.The simulation results show that the overpressure and noise intensity of the receiving point decrease with the distance between the receiving point and muzzle increasing,and the shooter should wear the corresponding protective equipment within the area of 1m around the muzzle brake.The simulation results are helpful to study the characteristics of muzzle shock wave and provide a reference for the safety protection of marksman near muzzle.

关 键 词：炮口制退器 数值模型 超压 噪声 安全 

分 类 号：TJ301[兵器科学与技术—火炮、自动武器与弹药工程]