Direct numerical simulation on the pyrolysis of materials with volatile residue layer

The effect brought about by the burning of cables and its effect on building fires poses many problems and challenges for researchers. One of the main reasons is that the numerical simulation of the pyrolysis process is especially difficult because of the presence of non-linear moving boundary conditions in the partial differential equations. This paper presents the results of a detailed numerical simulation of the pyrolysis process of materials with a volatile residue layer using partial differential equations. The movable region formula in this case was transformed to the fixed region formula, and a pre-evaluation iteration method was used for tracing the pyrolysis front. Numerical simulation results were found to compare well with those of the precise solution and integral model. The effects of the volatile char on the pyrolysis rate, varying with time were then obtained.