The Effects of Angular Orientation on Flame Spread over Thin Materials

Abstract

Data were taken to show the flame spread characteristics of thin materials burning on an insulating substrate. Metalized polyethylene terephthalate (0.20 mm) and paper (0.17 mm) were turned on the surface of glass filter insulation. Flame spread was measured in the upward or downward facing orientation for the material and in the directions of gravity assistance (up) or gravity opposition (down). Measurements were taken at various angles ranging from a vertical to a horizontal orientation. A theoretical analysis was developed to predict the flame spread as a function of material properties, sample orientation, and flame spread direction. The one dimensional theory was in reasonable agreement with paper data. Vertical upward spread was found to yield the highest velocity.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1999
Accession Number
ADA373846

Entities

People

  • J. G. Quintiere

Organizations

  • University of Maryland

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alcohols
  • Boundary Layer
  • Burning Rate
  • Coefficients
  • Combustion
  • Dacron
  • Energy
  • Equations
  • Films
  • Fires
  • Flow
  • Heat Energy
  • Heat Flux
  • Heat Transfer
  • Materials
  • Physical Properties
  • Thin Films

Readers

  • Fluid Dynamics.
  • Geodesy
  • Polymer Science and Engineering.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene
  • Microelectronics - Microelectromechanical Systems