Parallel numerical simulation of muzzle reacting flow
Received:December 14, 2011  Revised:May 26, 2012
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KeyWord:fluid mechanics  muzzle flow field  reacting flow  parallel computing  MPI
郭则庆 南京理工大学 瞬态物理国家重点实验室,南京
姜孝海 南京理工大学 瞬态物理国家重点实验室,南京
王杨 南京理工大学 瞬态物理国家重点实验室,南京
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      A computational fluid dynamics code for axisymmetric,multi-species,Navier-Stokes equations is developed to simulate the muzzle reacting flow with high-speed projectile.Based on the MPI parallel environment,the equations were solved by using a time splitting method.The convection terms were solved by using AUSM+ scheme with MUSCL interpolation method,and chemical kinetics for hydrogen-air mixture was dealt with by 9-species,19-step elementary reacting model.Chimera grid method was employed for the consideration of the moving projectile.The parallel validation example is in good agreement with the serial results,and the parallel computing efficiency reaches 64% by using 20 CPUs.The aerodynamics and chemical kinetics processes in the muzzle flow are discussed in detail according to the computational results.The result shows that,the method above mentioned is suitable for the simulation the reacting flow with high-speed projectile,and the computing speed is increased efficiently.