Surface-absorption assumption for radiant heating and ignition of energetic solids

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A numerical analysis for investigating the surface absorption in radiant ignition of energetic solids is described. The analysis is based on the one-dimensional heat equation with in-depth, volumetric absorption. It was assumed that radiation absorption is a volumetric phenomenon in opaque solids. The results show that in many cases, in-depth absorption is significant and assuming surface absorption can cause ignition times to be severely underestimated. The analysis forms the basis of a nondimensional conduction/radiation parameter for radiant ignition of solids, that quantifies the importance of in-depth absorption compared to surface absorption.

Original languageEnglish (US)
Pages (from-to)348-351
Number of pages4
JournalJournal of thermophysics and heat transfer
Issue number2
StatePublished - 2006

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes
  • Space and Planetary Science


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