Development of a Two-Dimensional Implicit Interior Ballistics Code
Abstract
The governing partial differential equations and constitutive relations are presented for the two-phase, axisymmetric, turbulent flow in a gun tube with a rotating projectile. The formulation includes the following constitutive models. Noble-Abel gas equation of state, molecular viscosity and thermal conductivity, turbulent viscosity and length scale, intergranular stress relation, interphase drag and heat transfer relations, and a burning rate correlation for solid phase combustion. One-dimensional heat conduction models are utilized to obtain both barrel wall surface temperature and the average solid particle surface temperature. An axisymmetric time-dependent adaptive coordinate system for interior ballistics flow field calculations is presented, and distinct filler elements and the projectile are treated using a quasi-one- dimensional lumped parameter analysis. The governing equations, constitutive relations and the time-dependent coordinate system developed herein have been incorporated into an existing computer code which solves the three-dimensional time-dependent compressible Navier-Stokes equations using a consistently split, linearized, block-implicit numerical scheme. The computer code developed under this effort has been designated as the MINT-G code.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1980
- Accession Number
- ADA084092
Entities
People
- Henry Mcdonald
- Howard J. Gibeling
- Richard C. Buggeln