Combustion of MeH/air mixts. was simulated for MeH concns. 7.6-9.5% by vol. to det. the change of mol. streams during reaction. A unidirectional flow of the reacting mixt. was examd. in the model. In addn. to convection, thermodiffusion and heat conduction were taken into account. Proportionality coeffs. were also calcd. from resp. equations.