Experimental and modeling studies of two-dimensional ammonium perchlorate diffusion flames

M. D. Smooke, R. A. Yetter, T. P. Parr, D. M. Hanson-Parr

Research output: Contribution to journalConference articlepeer-review

28 Scopus citations


We investigated two-dimensional axisymmetric diffusion flames in which the surface decomposition products of ammonium perchlorate (AP) combustion provided the coflow for a methane fuel stream. The two-dimensional problem was solved using the fully elliptic formulation of the governing equations. By utilizing recent developments in hydrocarbon, chlorine, NOx, and AP kinetics, we formulated a detailed transport, finite rate chemistry system for the temperature, velocities, vorticity, and species mass fractions of the combined flame system. We compared the results of this model with a series of experimental measurements in which the temperature was measured with OH rotational population distribution, and the transient species OH, CN, and NH were measured with planar laser-induced fluorescence and emission spectroscopy. The kinetic mechanism, previously validated in one-dimensional experiments, was found to give good results in the two-dimensional model when compared with the experiments. The two-dimensional model can be used to understand the effects of solid propellant heterogeneity on combustion zone microstructure and the location and structure of heat release zones that control the propellant ballistic properties. It is a first step in developing computer codes that can a priori predict propellant ballistic behavior via modeling, thereby partially supplanting expensive physical formulation and testing.

Original languageEnglish (US)
Pages (from-to)839-846
Number of pages8
JournalProceedings of the Combustion Institute
Issue number1
StatePublished - Jan 1 2000
Event30th International Symposium on Combustion - Chicago, IL, United States
Duration: Jul 25 2004Jul 30 2004

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Physical and Theoretical Chemistry


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