Performance Modifications for an Axisymmetric Large Blast Simulator Model

Abstract

Modifications to the basic geometry and operation of the BRL axisymmetric Large Blast Simulator (LBS) Model have been examined, to see if improvements can be achieved in its performance. The modifications tried were a) heating of the driver gas; b) operation with a discontinuous area change from diaphragm throat to driven tube; and c) operation with an enlarged throat at the diaphragm station. Performance gains over normal cold-gas operation were significant with driver gas heating and with the enlarged throat, modifications a) and c). Results using the discontinuous area change, rather than the present design with diverging nozzle opening to the driven tube, suggest that the modification is a viable design consideration for the full scale U.S. Large Blast/Thermal Simulator Facility. Keywords: Blast, Blast simulators, Blast waves, Shock tubes, Varying area.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1989
Accession Number
ADA207757

Entities

People

  • Brian P. Bertrand
  • Edmund J. Gion

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Army Aviation
  • Classification
  • Dynamic Pressure
  • Engineering
  • Gas Heating
  • Geometry
  • Materials
  • Military Research
  • Overpressure
  • Security
  • Shock Tubes
  • Simulations
  • Simulators
  • Stagnation Pressure
  • Two Dimensional
  • Weapons

Readers

  • Combustion and Flow Dynamics.
  • Computational Modeling and Simulation
  • Explosive Engineering.