Accession Number : ADA299958

Title :   Euler and Navier-Stokes Simulations of Shock Wave Interaction with a Generic Block Target.

Descriptive Note : Final rept. Jan-Nov 92,

Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : Schraml, Stephen J. ; Hisley, Dixie M.

PDF Url : ADA299958

Report Date : SEP 1995

Pagination or Media Count : 40

Abstract : A series of numerical simulations of blast wave/target interaction was performed to match a series of experiments conducted at the Centre d'Etudes de Gramat (CEG), France. The experiments that were modeled involved a square, two-dimensional block target positioned in the vertical center of a shock tube test section and subjected to non-decaying blast waves of various amplitudes. The results of the inviscid second order hydrodynamic advanced research code (SHARC) and the viscous USA-RG2 code simulations are compared to experimentally measured pressure histories. Particular emphasis is placed on the accurate modeling of vortex formation and evolution, which influences the aerodynamic loading of the target. The viscous and inviscid results are directly compared to determine the most accurate method of modeling both diffraction and drag phase blast loading of targets.

Descriptors :   *MATHEMATICAL MODELS, *INTERACTIONS, *SHOCK WAVES, SIMULATION, TWO DIMENSIONAL, MILITARY EQUIPMENT, NUMERICAL ANALYSIS, BLAST WAVES, ACCURACY, TURBULENCE, COMPUTATIONAL FLUID DYNAMICS, TARGETS, GAS DYNAMICS, THREE DIMENSIONAL, VERTICAL ORIENTATION, AERODYNAMIC LOADING, FRANCE, BLAST LOADS, DRAG, NAVIER STOKES EQUATIONS, SHOCK TESTS, INVISCID FLOW, VISCOSITY, SHOCK TUBES.

Subject Categories : Operations Research
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE