Laminar flame in the approximation of rectilinear trajectories of fast combustion products

Combustion reactions with fast products moving along practically rectilinear trajectories and having macroscopic paths are considered. Reactions of thermonuclear fusion can be referred to reactions of such type in wide range of parameters. Equations, describing flame propagation due to translational motion of fast combustion products in the framework of kinetic approach and in diffusion approximation were obtained. The normal rate of flame was calculated for stepwise and real combustion functions. It is shown that diffusion approximation is in a good agreement with results of kinetic equation solution