Title

The effect of mean turbulent strain rate on the flame speed of premixed, growing flames

Document Type

Article

Publication Date

1-1-2001

Publication Title

Journal of Engineering for Gas Turbines and Power

Volume

123

Issue

1

First Page

175

Last Page

181

Abstract

This paper presents a flame growth model based on experimental measurements of flame speed and mean turbulent strain rate. Methane/air mixtures of 0.7 and 0.9 equivalence ratios were centrally spark-ignited in a 125 mm cubical chamber. Based on schlieren images and combustion pressure traces, a linear correlation was found between the turbulent flame speed and the turbulent strain rate. For these unity-Lewis-number and near-zero-Markstein-number flames, the effectiveness of turbulent strain in enhancing the flame speed was found to increase linearly with the mean flame radius over the range of conditions tested.

DOI

10.1115/1.1339990

ISSN

07424795

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