The Effect of Strain on Diffusion Flames.
PURDUE UNIV LAFAYETTE IND PROJECT SQUID HEADQUARTERS
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Several steady-state and time-dependent solutions to the compressible conservation laws describing direct one-step near-equilibrium irreversible exothermic burning of initially unmixed gaseous reactants, with Lewis-Semonov number unity, are presented. The quantitative investigation first establishes the Burke-Schumann thin-flame solution using the Shvab-Zeldovich formulation. Real flames do not have the indefinitely thin reaction zone associated with the Burke-Schumann solution. Singular perturbation analysis is used to provide a modification of the thin-flame solution which includes a more realistic reaction zone of small but finite thickness. The particular geometry emphasized is the unbounded counterflow such that there exists a spatial constant rate of strain along the flame. Modified author abstract
- Combustion and Ignition