Transition to Double Mach Stem for Nuclear Explosion at 104 ft Height of Burst.

Abstract

A nuclear height-of-burst (HOB) calculation has been performed using a two-dimensional flux-corrected transport (FCT) code. The calculation predicts the transition from regular to Mach reflection at ground ranges approximately equal to the HOB. The characteristics of the resulting waveforms are basically the same as those found in shock tube experiments when planar shocks reflect from wedges, and appear highly regular. In the double-Mach reflection region the first Mach stem is observed to toe out markedly compared with the planar case. In the high-over-pressure (regular reflection) region initialization errors and inadequate resolution caused pressure peaks to appear too low by about 20%. In the Mach reflection region the peak pressures are in good agreement with experimental data. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Nov 17, 1981
Accession Number
ADA107748

Entities

People

  • D. L. Book
  • J. Michael Picone
  • Jay Paul Boris
  • M. Fry

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Blast
  • Blast Waves
  • Dynamic Pressure
  • Explosions
  • Explosives
  • Flow Fields
  • Height Of Burst
  • High Explosives
  • Mach Number
  • Nuclear Explosions
  • Physics
  • Shock Waves
  • Simulations
  • Static Pressure
  • Two Dimensional
  • Waves

Fields of Study

  • Physics

Readers

  • Combustion Dynamics and Shock Wave Physics.