Obstacles as Probes of the Blast Wave Interior in the NRL LASER/HANE Simulation Experiment.

Abstract

It is proposed that small obstacles be placed in the path of the expanding blast wave to probe the dynamics of the interior cavity formed after a laser target interaction. The theory of attached and detached shocks for cones and spheres in supersonic streams is briefly reviewed. Graphs of the results for a ratio of specific heat gamma = 1.2 and 5/3 are presented for estimating the local Mach number in the cavity from the experimental results. It is also suggested that theoretical and numerical models of the experiment predict the temporal evolution of the bow shock stand off distance for a blunt obstacle. A direct comparison with the experiment can then verify or rule out the competing models.

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Document Details

Document Type
Technical Report
Publication Date
Dec 06, 1985
Accession Number
ADA162535

Entities

People

  • J. L. Giuliani Jr.

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Counter WMD
  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Blast Waves
  • Classification
  • Communication Systems
  • Energy
  • Engineering
  • Fluid Flow
  • Free Stream
  • Heat Energy
  • High Altitude
  • Mach Number
  • Materials
  • Military Research
  • Physics
  • Physics Laboratories
  • Simulations
  • Supersonic Flow

Fields of Study

  • Physics

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Fluid Dynamics.
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Hypersonics
  • Hypersonics - Hypersonic Flow