| This work presents an investigation of heat and mass transfer effects in catalytic monolith reactors used for automotive catalytic converters. It is shown that the Nusselt and Sherwood numbers in the entry region vary significantly depending on the reaction rate at the wall and the physical properties. Predictions from one and two dimensional models are compared. The effect of including the two dimensional momentum balance on predicted light-off behaviour is significant. The effect of catalytic washcoat geometry is tested to determine its effect on the light-off position and shape. It is seen that the shape of the washcoat has an influence on the shape of the light-off curve.;A study is presented on CO oxidation with very high fluid velocity in small reactors. It is shown that significant conversion may be achieved, which suggests that their use as preturbocharger catalyst is worth exploration.;Keywords: Monoliths, Heat Transfer, Light-off, Washcoat Geometry, Simulations, Three Dimensional, Pre-Turbo Catalysts, Turbulence. |
