Fireball Entrainment Study

Abstract

A continuation of an experimental program to study the process of entrainment and turbulent mixing in fireballs is described. Recent modifications and additions to the experimental facility are discussed. Both laminar and turbulent helium concentration data are presented, reduced by an ensemble averaging technique based on physical features of the flow field. Laboratory turbulent size/rise data are presented and are shown to be in excellent agreement with data from a low altitude, low yield nuclear test. Photographs of particulate seeded vortices show a distinct jelly-role structure at a laminar condition whereas turbulent mixing in higher Reynolds number events is shown to overwhelm that structure.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1973
Accession Number
AD0771276

Entities

People

  • David D. Mantrom
  • Wayne W. Haigh

Organizations

  • TRW Inc.

Tags

Communities of Interest

  • Autonomy
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acquisition
  • Data Acquisition
  • Data Analysis
  • Data Reduction
  • Entrainment
  • Flow
  • Flow Fields
  • High Pressure
  • Interferograms
  • Measurement
  • Mixing
  • Particles
  • Particulates
  • Photographs
  • Reynolds Number
  • Test Facilities
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Fluid Mechanics and Fluid Dynamics.