Numerical simulation of chemical vapor infiltration of propylene into C/C composites with reduced multi-step kinetic models

A parallel-consecutive reaction model of chemistry and kinetics is proposed to simulate homogeneous gas-phase reactions of propylene pyrolysis in CVI processes. An improved bipore model is also suggested to describe the changes of the pore topology with densification. The competition between the heterogeneous reactions of pyrolytic carbon deposition and the homogeneous reactions is analyzed by a numerical simulation method. Numerical simulation...