2. Simplified calculation of a laminar diffusion flame

The aim of this paragraph is to show that, in a simple case, it is possible to completely determine the structure of a diffusion flame. This analysis, originally due to Burke and Schumann (1928), also introduces the concepts usually used to describe this type of flame.

This involves the study of a two-dimensional planar jet of fuel F, cocurrent with an infinite jet of oxidizer O (figure 8 ). Both jets are assumed to have the same initial unit flow rate ρu (i.e. ρ _F U _F = ρ _O U _O where ρ _F and ρ _O denote...