The inward propagating spherical flame and burner stabilized Bunsen-type flame of low-Lewis-number premixtures are studied numerically. It is shown that reduction of the reaction rate induced by the flame stretch makes the flame vulnerable to the radiative heat losses which may well result in a partial or complete extinction of the flame. © 1996 The American Physical Society.

• Received 17 March 1995

DOI:https://doi.org/10.1103/PhysRevE.53.6021