The effect of mean turbulent strain rate on the flame speed of premixed, growing flames
Journal of Engineering for Gas Turbines and Power
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.
Ting, Checkel M.D.. (2001). The effect of mean turbulent strain rate on the flame speed of premixed, growing flames. Journal of Engineering for Gas Turbines and Power, 123 (1), 175-181.