Development of a combined solver to model transport and chemical reactions in catalytic wall-flow filters

作者：Allouche Mohamed Hatem^*; Enjalbert Romain; Alberini Federico; Ariane Mostapha; Alexiadis Alessio

来源：Chemical Engineering Research and Design, 2017, 117: 681-687.

DOI：10.1016/j.cherd.2016.11.014

• CFD
• Reactive flow
• Heat and mass transfer
• Catalytic converter
• Diesel particulate filter

In this work, we develop a non-isothermal model for diesel particulate filters including exothermic and competing chemical reactions. We begin with an isothermal, single-reaction model and we gradually increase its complexity. By comparing various models, we aim at establishing the minimum degree of complexity required to effectively model the system under investigation. Based on the numerical simulations, we conclude that isothermal models are adequate only if the temperature of the catalyst is, at all times, completely below or completely above a critical temperature. However, if the goal is to predict the critical temperature, only non-isothermal models should be used. The results with competing reactions, on the other hand, show that the presence of competing reactions does not affect significantly the overall conversion in the filter.

• 出版日期2017-1