Numerical Simulation of Muzzle Blast Overpressure in Antiaircraft Gun Muzzle Brake

Guo, Zhangxia; Pan, Yi; Zhang, Haiyan; Guo, Baoquan

doi:10.12733/jics20101913

Cited by 7 publications

(8 citation statements)

References 7 publications

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“…Jiang [15] used the ALE equation and dynamic grid technology to simulate the entire process of motion of the body from inside a 44 mm caliber bore to outside it until it flew away from the initial flow field. Guo [16,17] considered a 7.62 mm ballistic gun for an experimental analysis of the initial flow field at the muzzle and its aftereffects based on the ALE equation and a partition-structured body-fitted grid. Zhang [18] used the 3D Euler equation in combination with the Roe scheme and structured dynamic grid technology to numerically simulate the flow field at the muzzle of a 20 mm caliber gun with a brake.…”

Section: Introductionmentioning

confidence: 99%

Mechanism of Evolution of Shock Wave of Muzzle Jet under Initial Interference and Its Simplified Model

Li,

Wang

2024

Aerospace

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Large-caliber and long-barrel weapons are important experimental devices for exploring the impact resistance and reliability of warheads. The force of impact of the muzzle jet has a significant influence on the overload resistance of the warhead and surrounding devices. The mechanism of motion of the body inside the tube cannot be ignored owing to the high kinetic energy at the muzzle. In this study, we designed the relevant experiment and a simulation model to analyze the structural characteristics and mechanism of evolution of the shock wave and the vortex structure in a muzzle jet. The aim was to examine the evolution of the shock wave with initial jet-induced interference. And we established three other simulation models to compare the similarities and differences between the results of the models. The results showed that, in the original complex model, the initial jet restricted the free expansion of the muzzle jet, and this led to many shock–shock collisions that retarded the development of the shock waves. Multiple reflected shock waves were thus formed under a high local pressure that distorted the shock structure, while the structure of the shock wave in the simplified models was clear and simple. The parameters of motion of the body changed by a little when the initial jet-induced interference was ignored. The difference in values of the strongest impact force measured at monitoring points far from the muzzle was small, with an error of about 2%, such that the simplified model without the initial jet could be used in place of the original complex model. The other simplified models yielded significant differences. Our results provide an important theoretical basis for further research on the muzzle jet and its applications in engineering.

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Section: Introductionmentioning

confidence: 99%

Mechanism of Evolution of Shock Wave of Muzzle Jet under Initial Interference and Its Simplified Model

Li,

Wang

2024

Aerospace

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“…Unlike other sounds, shock wave has high energy, low frequency, and impulsiveness. It is strongly directed and has long-range propagation [66][67][68][69][70][71][72][73][74]. The muzzle blast is strongly directed.…”

Section: Introductionmentioning

confidence: 99%

Force and Sound Pressure Sensors Used for Modeling the Impact of the Firearm with a Suppressor

et al. 2020

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In this paper, a mathematical model for projectiles shooting in any direction based on sensors distributed stereoscopically is put forward. It is based on the characteristics of a shock wave around a supersonic projectile and acoustical localization. Wave equations for an acoustic monopole point source of a directed effect used for physical interpretation of pressure as an acoustic phenomenon. Simulation and measurements of novel versatile mechanical and acoustical damping system (silencer), which has both a muzzle break and silencer properties studied in this paper. The use of the proposed damping system can have great influence on the acoustic pressure field intensity from the shooter. A silencer regarded as an acoustic transducer and multi-holes waveguide with a chamber. Wave equations for an acoustic monopole point source of a directed effect used for the physical interpretation of pressure as an acoustic phenomenon. The numerical simulation results of the silencer with different configurations presented allow trends to be established. A measurement chain was used to compare the simulation results with the experimental ones. The modeling and experimental results showed an increase in silencer chamber volume results in a reduction of recorded pressure within the silencer chamber.

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“…Unlike other sounds, shock wave has high energy, low frequency, impulsiveness, it is strongly directed and has long range propagation. [8]. Muzzle blast is strongly directed.…”

Section: Introductionmentioning

confidence: 99%

“…The design of muzzle brake, which would decrease the noise, involves theoretic studies of acoustic systems and simulations as well as empirical and experimental data. [8].…”

Section: Introductionmentioning

confidence: 99%

Simulation and Measurements of Small Arms Blast Wave Overpressure in the Process of Designing a Silencer

Hristov¹,

Kari²,

Jerković³

et al. 2015

Measurement Science Review

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Simulation and measurements of muzzle blast overpressure and its physical manifestations are studied in this paper. The use of a silencer can have a great influence on the overpressure intensity. A silencer is regarded as an acoustic transducer and a waveguide. Wave equations for an acoustic dotted source of directed effect are used for physical interpretation of overpressure as an acoustic phenomenon. Decomposition approach has proven to be suitable to describe the formation of the output wave of the wave transducer. Electroacoustic analogies are used for simulations. A measurement chain was used to compare the simulation results with the experimental ones.

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Numerical Simulation of Muzzle Blast Overpressure in Antiaircraft Gun Muzzle Brake

Cited by 7 publications

References 7 publications

Mechanism of Evolution of Shock Wave of Muzzle Jet under Initial Interference and Its Simplified Model

Mechanism of Evolution of Shock Wave of Muzzle Jet under Initial Interference and Its Simplified Model

Force and Sound Pressure Sensors Used for Modeling the Impact of the Firearm with a Suppressor

Simulation and Measurements of Small Arms Blast Wave Overpressure in the Process of Designing a Silencer

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