Resonance Line Broadening of Alkali Metals in Pyrotechnic Flames

Abstract

A mathematical model of a pyrotechnic flame has been developed and validated. The model utilizes a computer program to calculate the relative radiant power of flares containing any of the alkali metals. The computation takes into consideration known system variables such as formulation, candle size, displacement along the plume axis, and atmospheric pressure. These effects were evaluated over a wide range of conditions and the computed spectra follow the established experimental spectra trends. The computer solution is a general solution requiring no ad hoc modifications to the model for any of the metals or conditions tested. The basis for the model of the flame permits calculation of the effects of mixing of the flare plume with the ambient atmosphere and takes heat loss along the plume axis into consideration.

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Document Details

Document Type
Technical Report
Publication Date
Apr 15, 1983
Accession Number
ADA135685

Entities

People

  • D. R. Dillehay

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alkali Metals
  • Barometric Pressure
  • Birds
  • Combustion
  • Computer Programs
  • Computers
  • Diameters
  • Energy Transfer
  • Equations
  • Heat Loss
  • Mathematical Models
  • Physical Properties
  • Potassium
  • Radiation
  • Radiative Transfer
  • Spectra
  • Thermodynamic Properties

Readers

  • Fire Suppression Systems Design.
  • Materials Science and Engineering.
  • Systems Analysis and Design