On the Coupling of an Anchored Flame with an Acoustic Field

The interaction of an anchored flame with a low-level acoustic field is considered. The flame is considered to be 'held' by a gauze through which the reactants are allowed to flow. Small perturbations in velocity in the combustion zone are linked upstream and downstream with order 0(M) acoustic disturbances at large distances from the source, ...

A review of theories currently being used to model steady plane flames on flame-holders

The stability of burner flames for arbitrary Lewis number is considered on the basis of large activation energy modelling. Previous leading-order-only approaches are now extended to second order in 0,-1 (the inverse activation energy). The assumption that the unsteady perturbations are small (order E) means that one must discuss the...

Second order theory of unsteady burner-anchored flames with arbitrary Lewis Number

Three theoretical models of plane flames burning on a cooled porous-plug type of flame-holder are reviewed and compared with experimentally observed relationships between stand-off distance, flame speed and temperature. It is shown that for most practical burners their conductance is large and that for near adiabatic conditions, the order of the...