Accession Number : ADP006610

Title :   Various Finite Difference Schemes for Transient Three Dimensional Heat Conduction,

Corporate Author : ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER PICATINNY ARSENAL N J CLOSE COMBAT ARMAMENTS CENTER

Personal Author(s) : Yalamanchili, Rao ; Yalamanchili, Surya R.

Report Date : MAR 1992

Pagination or Media Count : 11

Abstract : The motivation for this task comes from the needs of future hypervelocity projectile surrounded by asymmetric flow due to angle of attack and/or fins in case of kinetic energy projectile. In either case, unsteady and three-dimensional effects, large and nonuniform heat fluxes, tedious and repetitive number crunching capabilities of supercomputers dictate optimum numerical techniques and predictive critical time steps for successful and practical solutions. Finite element modeling is ideal whenever there is geometrical complexity, coatings, composite and multi materials. However, classical finite element technique yields a particular equation. There may be some finite difference schemes superior to classical finite element technique. Therefore, various finite difference schemes are derived and their characteristics are discussed applicable to transient three dimensional heat conduction problems.

Descriptors :   *HYPERVELOCITY PROJECTILES, *KINETIC ENERGY PROJECTILES, *FINITE DIFFERENCE THEORY, *THERMAL CONDUCTIVITY, ANGLE OF ATTACK, ANGLES, ATTACK, COATINGS, ENERGY, EQUATIONS, FINS, FLOW, HEAT, KINETIC ENERGY, KINETICS, MATERIALS, MOTIVATION, NONUNIFORM, NUMBERS, PROJECTILES, SUPERCOMPUTERS, THREE DIMENSIONAL, TIME, TRANSIENTS.

Subject Categories : Numerical Mathematics
      Thermodynamics
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE