大口径火炮发射噪声场数值仿真与实验研究  

Numerical Simulation and Experimental Study on Noise Field of Large Caliber Gun

作　　者：蒋晟 阮文俊[1] 孙雪明 刘建功 JIANG Sheng;RUAN Wenjun;SUN Xueming;LIU Jiangong(School of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China;Jiangxi Xinghuo Military Industry Co.,Ltd.,Nanchang 331709,Jiangxi,China;Hebei Taihang Machinery Industrial Co.,Ltd.,Shijiazhuang 052160,Hebei,China)

机构地区：[1]南京理工大学能源与动力工程学院,江苏南京210094 [2]江西星火军工工业有限公司,江西南昌331709 [3]河北太行机械有限公司,河北石家庄052160

出　　处：《火炮发射与控制学报》2024年第1期113-118,共6页Journal of Gun Launch & Control

摘　　要：大口径火炮发射时产生的炮口冲击波会对炮手区域内设备及人员造成损伤。为研究大口径火炮发射时噪声场分布规律,基于有限体积法,采用SST k-ω模型,根据某火炮实体模型建立了火炮计算区域三维仿真模型,利用动网格技术计算得到了不同内弹道参数下炮手区域超压随时间的变化规律,并与实验进行对照确认了计算的可靠性。计算结果表明,高压高速燃气从侧孔及炮口流出后不断发展,在火炮周围形成了带有周期性的压力膨胀波并对炮手区域产生影响;在总体噪声分布规律上,炮手区域内噪声集中于火炮模型对称面及地面附近;同时由于内弹道参数差异,整体的噪声水平随装药量增大而上升。计算结果为分析内弹道参数与炮手区域噪声分布规律的内在关系提供了有效参考。The muzzle shock wave generated by the launch of large-caliber guns will cause damage to equipment and personnel in the gunner′s area.In order to study the distribution law of the noise field during the launch of large-caliber guns,a 3D simulation model of the gun calculation area was established based on the finite volume method,the SST k-ωmodel and the solid model of a gun.The change law of the overpressure of the gunner′s area over time under different internal ballistic parameters was calculated by the dynamic grid technology,and the calculation reliability was confirmed by comparing with the experiment results.The calculation results show that the high pressure and high speed gas continuously develops after flowing out from the side hole and muzzle,forms a periodic pressure expansion wave around the gun and affects the gunner′s area.In terms of the overall noise distribution law,the noise in the gunner′s area is concentrated in the symmetry plane of the gun model and near the ground.At the same time,the overall noise level increases with the increase of the charge due to the differences of internal ballistic parameters.The calculation results provide an effective reference for analyzing the internal relationship between internal ballistic parameters and the noise distribution law in gunner′s area.

关 键 词：内弹道 冲击波 超压 数值模拟 FLUENT 

分 类 号：TJ01[兵器科学与技术—兵器发射理论与技术]