Third M.I.T. Conference on Computational Fluid and Solid Mechanics June 14–17, 2005  

A quasi-one-dimensional unsteady laminar flame formulation with independent strain rate and curvature

Raymond L. Spetha, Youssef M. Marzoukb, Ahmed F. Ghoniema,*
aMassachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
bSandia National Laboratories, Livermore, CA 94551, USA
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ABSTRACT
We present a new formulation of a cylindrical laminar flame in which unsteady strain rate and curvature are explicit, independent parameters. The formulation is described by a one-dimensional set of governing equations incorporating detailed kinetics and transport. We demonstrate the impact of curvature on the structure of strained premixed methane-air flames.

Keywords:  Turbulent combustion; Laminar flames; Flame curvature; Flame stretch; Potential flow
* Corresponding author. Tel.: + 1 (617) 253 2295, Fax: + 1 (617) 253 5981; E-mail: ghoniem@mit.edu