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Calculation of the Unsteady Gas Flow Around a Projectile Moving Through a Gun Barrel

[+] Author Affiliations
Valery Ponyavin, Roald Akberov, Yitung Chen, Hsuan-Tsung Hsieh, Darrell W. Pepper

University of Nevada at Las Vegas, Las Vegas, NV

Paper No. IMECE2003-41930, pp. 355-358; 4 pages
  • ASME 2003 International Mechanical Engineering Congress and Exposition
  • Fluids Engineering
  • Washington, DC, USA, November 15–21, 2003
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3716-5 | eISBN: 0-7918-4663-6, 0-7918-4664-4, 0-7918-4665-2
  • Copyright © 2003 by ASME


The calculation of gas flow during the motion of a projectile in the gun barrel is a complicated computational task due of the presence of numerous factors, such as nonisothermicity, turbulence, changes in the shape of the computational domain with time, etc. In this study, an attempt to calculate the characteristics of gas flow around a projectile during the motion of the projectile in the gun barrel is undertaken. The flow is considered axisymmetrical, nonstationary, nonisothermal, compressible, and turbulent. For calculating the flow around the projectile, the finite volume method was employed. During the motion of the projectile, the flow pattern behind it changed from subsonic to supersonic. The results of the calculations are represented in figures depicting the flow at different moments of time. The figures show the fields of velocity, pressure and density, as well as the appearance of shock waves inside the gun barrel at subsonic and supersonic speeds.

Copyright © 2003 by ASME



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