According to the special feature of the how outside a char particle under f
orced convection conditions (Re < 150), a simplified model for calculating
the burning rate of a char particle is presented in this paper. The burning
processes of frontal and rear hemispheres are discussed, respectively. The
effects of both flow and ash formation are considered in the study. Based
on this model, a numerical simulation of the burning process is conducted f
or different type of char. Good agreement of the calculated results with co
rresponding experiment data demonstrates that this model is reasonable for
the case with Re < 150.