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Dynamic effects of combustionThe dynamic effects of combustion are due to the evolution of exothermic energy and its deposition in the compressible medium where the process takes place. The paper examines the dynamics of combustion phenomena, including ignition, turbulent flame propagation (inflammation), explosion, and detonation, with emphasis on their exothermic characteristics. Ignition and explosion are treated as problems of nonlinear mechanics, and their dynamic behavior is described in terms of phase space models and cinematographic laser shear interferograms. The results of a numerical random vortex model of turbulent flame propagation are confirmed in a combustion tunnel experiment, where it was observed that a fresh mixture of burnt and unburnt gases can sustain combustion with a relatively small expenditure of overall mass flow, due to the increasing specific volume of burnt gases inside the flame front. An isentropic pressure wave is found to precede the accelerating flame in the process of detonation, and components of this presssure wave are shown to propagate at local sonic velocities.
Document ID
19840046341
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Oppenheim, A. K.
(California, University Berkeley, CA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1982
Subject Category
Inorganic And Physical Chemistry
Accession Number
84A29128
Funding Number(s)
CONTRACT_GRANT: W-7405-ENG-48
CONTRACT_GRANT: NAG3-131
CONTRACT_GRANT: NAG3-137
CONTRACT_GRANT: NSF CPE-81-15163
Distribution Limits
Public
Copyright
Other

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