Linear response of stretch-affected premixed flames to flow oscillations

The linear response of 2D wedge-shaped premixed flames to harmonic velocity disturbances was studied, allowing for the influence of flame stretch manifested as variations in the local flame speed along the wrinkled flame front. Results obtained from analyzing the G-equation show that the flame response is mainly characterized by a Markstein number σˆC, which measures the curvature effect of the wrinkles, and a Strouhal number, Stf, defined as...