Accession Number : ADA307160
Title : Experimental Evaluation and Numerical Simulations of Multi-Driver Shock Tube Flow.
Descriptive Note : Final rept.,
Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
Personal Author(s) : Schraml, Stephen J. ; Mermagen, Christopher
PDF Url : ADA307160
Report Date : APR 1996
Pagination or Media Count : 75
Abstract : The U.S. Army Research Laboratory and the Centre d'Etudes de Gramat, France, executed a cooperative study in which the time dependent flow fields in Le Simulateur de Souffle a Grand Gabarit (SSGG) large blast simulator were examined. The flow characteristics of static and stagnation overpressure were measured at two longitudinal positions in the expansion tunnel of the simulator. Instrumentation rakes were designed and fabricated to support a total of 19 pairs of static and stagnation pressure transducers that were distributed across the expansion tunnel cross section at each of the longitudinal positions. Flow measurements were recorded for eight shots with peak static overpressure levels between 20 kPa and 120 kPa. The measured data were used to assess the flow uniformity and distribution at each of the longitudinal measurement positions in the simulator. A finite difference Euler equation solver and a finite volume Navier Stokes equation solver were employed in a set of detailed, three dimensional (3-D) fluid dynamics calculations that were performed to match the test conditions. The 3-D computational results are compared to the experimental data to further examine the time dependent flow characteristics and to validate the fluid dynamics codes for future blast studies.
Descriptors : *BLAST WAVES, *NUCLEAR EXPLOSION SIMULATION, *NAVIER STOKES EQUATIONS, *SHOCK TUBES, MEASUREMENT, PEAK VALUES, EXPERIMENTAL DATA, COMPUTATIONS, TIME DEPENDENCE, PRESSURE TRANSDUCERS, NUMERICAL ANALYSIS, DIFFERENCE EQUATIONS, OVERPRESSURE, CODING, FLOW FIELDS, CROSS SECTIONS, FRANCE, EXPANSION, EULER EQUATIONS, FLUID DYNAMICS, STATIC PRESSURE, STAGNATION PRESSURE.
Subject Categories : Photography
Distribution Statement : APPROVED FOR PUBLIC RELEASE