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Abstract
The results of a linear stability analysis of a stationary premixed plane flame attached to a porous plug burner are presented. A dispersion relation derived by Buckmaster (1983) is used to define the neutral stability curve in the wave number vs. Lewis number plane. The nature of this curve is analyzed as the characteristic parameters of the burner and the standoff distance of the flame are varied. It is shown that the neutral stability curve may have multiple branches where pulsating flames become unstable. Depending on the parameter values, the burner may have a stabilizing or destabilizing effect.
