Diffusion flames

In general, flames may be divided into two classes: flames of the Bunsen type in which the combustible gas and air are premixed before ignition occurs and flames in which the combustible gas and air meet coincidently with the occurrence of combustion. To this second class of flames the authors have applied the term “diffusion flames.”

An analysis of this type of flame has been made which has led to a theory of its mechanism. A mathematical presentation of the theory is given and also the results of an extensive experimental investigation of the deductions therefrom. As a consequence of this work considerable light is shed on the physical characteristics, the mechanism, and the general properties of this very common class of flames.