Accession Number : ADA192178

Title :   Analytic and Numerical Modeling of Heat and Material Transport in Electrical Hypervelocity Guns.

Descriptive Note : Final rept. 5-6 Sep 86,

Corporate Author : GT-DEVICES INC ALEXANDRIA VA

Personal Author(s) : Winsor, Niels K

PDF Url : ADA192178

Report Date : 04 Dec 1987

Pagination or Media Count : 85

Abstract : A computer simulation code has been developed. The physical transport processes of radiation transport, viscosity, electrical and thermal conductivity and turbulence were included in the study. The code benchmarked against material erosion experiments with metals and insulators. The processes occurring near the bore wall of an electrothermal gun have been evaluated. The studies have demonstrated the utility of a gun system redesign which lowers the propelling gas temperature near the wall. This has resulted in the experimental reduction of gun bore erosion to levels at or below the erosion in conventional powder guns. The code results have also been interpreted for the electromagnetic (rail) gun case. Here the unavoidable high propelling gas temperatures cause a more severe erosion problem.

Descriptors :   *COMPUTERIZED SIMULATION, *EROSION, *GUN BARRELS, *HYPERVELOCITY GUNS, *TRANSPORT, *TRANSPORT PROPERTIES, BORES, CODING, COMPUTER PROGRAMS, ELECTRICAL CONDUCTIVITY, GASES, INSULATION, MATERIALS, MATHEMATICAL MODELS, METALS, POWDERS, PROPELLING CHARGES, RADIATIVE TRANSFER, REDUCTION, TEMPERATURE, THERMAL CONDUCTIVITY, THERMOELECTRICITY, TURBULENCE, VISCOSITY, WALLS, ELECTRIC GUNS, ABLATION, FORTRAN

Subject Categories : Electricity and Magnetism
      Guns
      Mechanics
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE