Accession Number:

AD0773480

Title:

The Effect of Strain on Diffusion Flames.

Descriptive Note:

Technical rept.,

Corporate Author:

PURDUE UNIV LAFAYETTE IND PROJECT SQUID HEADQUARTERS

Personal Author(s):

• Carrier,George F.
• Fendell,Francis E.
• Marble,Frank E.

Report Date:

1973-10-01

Pagination or Media Count:

71.0

Abstract:

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

Descriptors:

• *Exhaust flames
• *Reaction kinetics
• Combustion
• Turbulence
• Thermal diffusion
• Turbulent diffusion
• Nonequilibrium flow

Subject Categories:

• Combustion and Ignition

Distribution Statement:

APPROVED FOR PUBLIC RELEASE