Abstract
resulting model consists of conservation of species equations for the pyrolysis gases, separate energy equations for the pyrolysis gases, char, and virgin layers, and an equation for the porosity. The velocity of the pyrolysis gases is determined from Darcy’s law. The model is applied to a material that approximates PICA and a detailed reaction mechanism is created from NIST data that describes the decomposition of gas-phase phenol. Preliminary results indicate that the pyrolysis gases entering the boundary layer are quite dierent from those computed using an equilibrium assumption. Additionally, a signicant dierence between char and gas temperatures is predicted, suggesting that the thermal equilibrium assumption in today’s TPS response models is invalid.
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