Numerical Simulation on the Muzzle Shock Wave Pressure for Aircraft Gun

Abstract The muzzle shock wave has a great impact on the airborne structure, personnel and equipment. Therefore, flow field of aircraft gun is used as research object, based three-dimensional reynolds-averaged Navier-Stokes control equation standard k − ε turbulence model, finite element simulation model powder gas motion process in after-effect period without considering projectile established, adaptive grid technique to divide mesh inside barrel brakes, volume method applied numerically calculate equations at obtain pressure with brakes its development law, build an experimental verification platform verify accuracy simulated pressure. results show that established can accurately predict