A simple analysis of the influence of strain and curvature on laminar premixed flames

The aim of this work is to describe the influence of nonuniform flow on laminar flames. A simple steady flow analysis is presented in which gas density and molecular transport coefficients are assumed constant and a global reaction rate expression is employed in the high activation energy asymptotic...

Full description

Saved in:
Bibliographic Details
Published in:Memoirs of the School of Engineering, Nagoya University Nagoya University, 2001-01, Vol.53 (1-2), p.1-27
Main Authors: Takeno, T, Bray, K
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The aim of this work is to describe the influence of nonuniform flow on laminar flames. A simple steady flow analysis is presented in which gas density and molecular transport coefficients are assumed constant and a global reaction rate expression is employed in the high activation energy asymptotic limit. Considerable further simplification is achieved by a priori specification of a function related to the mass flow rate normal to the flame. The analysis allows the influence of flame curvature and strain on the mass burning rate to be clearly identified. It is shown that, except in the weak stretch limit, the relationship between mass burning rate and flame stretch is dependent on flame geometry. Conversely, the mass burning rate is uniquely related to the temperature gradient at the reaction surface irrespective of flame geometry. (Author)
ISSN:0919-0805