Browse Publications Technical Papers 2012-01-1296
2012-04-16

xD+1D Catalyst Simulation-A Numerical Study on the Impact of Pore Diffusion 2012-01-1296

This paper presents a numerical study on the impact of washcoat diffusion on the overall conversion performance of catalytic converters. A comprehensive transient 1D pore diffusion reaction model is embedded in state-of-the-art 1D and 3D catalytic converter models. The pore diffusion model is discussed with its model equations and the applied diffusive transport approaches are summarized. The diffusion reaction model is validated with the help of two available analytical solutions. The impact of basic washcoat characteristics such as pore diameters or thickness on overall conversion performance is investigated by selected 1D+1D calculations. This model is also used to highlight the impact of boundary layer transfer, pore diffusion and reaction on the overall converter conversion performance. The interaction of pore diffusion and flow non-uniformities is demonstrated by 3D+1D CFD simulations.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 16% off list price.
Login to see discount.
We also recommend:
TECHNICAL PAPER

Characterization of a Catalytic Converter Internal Flow

2007-01-4024

View Details

TECHNICAL PAPER

Modelling of Phosphorus Poisoning Using Computational Fluid Dynamics and its Effect on Automotive Catalyst Performance

2004-01-1889

View Details

TECHNICAL PAPER

Extending Catalyst Useful Life through Advanced Catalytic Materials and Flow Dynamics

2010-32-0038

View Details

X