Numerical simulation and experiment of double chamber brake based on CFD

Area of Science:

• Fluid Dynamics
• Ballistics
• Mechanical Engineering

Background:

• Artillery firing generates high-temperature, high-pressure gas and shock waves.
• Gunpowder gas significantly impacts gun body stability, affecting accuracy and personnel safety.
• Muzzle brake performance is critical for mitigating these effects.

Purpose of the Study:

• To numerically simulate and optimize the design of a double-chamber muzzle brake.
• To analyze the effects of muzzle gas flow on gun body stability.
• To improve firing accuracy and safety through brake optimization.

Main Methods:

• Computational Fluid Dynamics (CFD) was employed for numerical simulation.
• Three-dimensional Euler's control equations, gas equation of state, and k-epsilon model were utilized.
• Dynamic mesh technology was applied to model the muzzle flow field.
• Optimized brake performance was compared against pre-optimization parameters and experimental data.

Main Results:

• The optimized muzzle brake demonstrated an 8.2% increase in efficiency.
• Numerical simulation results showed a low deviation of 10.5% compared to experimental data.
• The study validated the accuracy of CFD simulations and the effectiveness of the optimized brake.

Conclusions:

• The optimized double-chamber muzzle brake significantly improves gun body stability and retracting effect.
• CFD numerical simulation is a reliable tool for muzzle brake design and optimization.
• Findings provide valuable insights for the design of advanced artillery systems.