Numerical Simulation on the Characteristics of Muzzle Flow Field of Embedded Aircraft Gun

doi:10.3969/j.issn.1000-1093.2017.12.010

Abstract

Abstract: In order to study the influence of flight velocity on the muzzle flow field characteristics of embedded gun, the field development processes in four different conditions are numerically simulated based on the Navier-Stokes equations and the k-ε turbulence model. The basic characteristics of the muzzle flow field under static condition and supersonic flight condition are compared, and the changes of blast intensity are analyzed. The result shows that the muzzle flow field structure of embedded aircraft gun during the supersonic flight includes propellant gas shock wave, separation shock wave, slip surface and so on; the magnitude of separation shock wave at a certain flight velocity is positively correlated with the Mach number; and the peak overpressure of blast changes with the Mach number. Key

Key words: ordnancescienceandtechnology, aircraftgun, unsteadygasjetflowfield, numericalsimulation

CLC Number:

TJ012.2

GUO Ze-qing, QIAO Hai-tao, JIANG Xiao-hai. Numerical Simulation on the Characteristics of Muzzle Flow Field of Embedded Aircraft Gun[J]. Acta Armamentarii, 2017, 38(12): 2373-2378.

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第38卷第12期
2017 年12月兵工学报ACTA
ARMAMENTARIIVol.38No.12Dec.2017

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