This paper includes a numerical and experimental study of fluid flow in automotive catalytic converters. The numerical work involves using computational fluid dynamics (CFD) to perform three-dimensional calculations of turbulent flow in an inlet pipe, inlet cone, catalyst substrate (porous medium), outlet cone, and outlet pipe. The experimental work includes using hot-wire anemometry to measure the velocity profile at the outlet of the catalyst substrate, and pressure drop measurements across the system. Very often, the designer may have to resort to offset inlet and outlet cones, or angled inlet pipes due to space limitations. Hence, it is very difficult to achieve a good flow distribution at the inlet cross section of the catalyst substrate. Therefore, it is important to study the effect of the geometry of the catalytic converter on flow uniformity in the substrate. The analysis involved determining back pressure (BP) across the converter system for different monolith cell densities, mass flow rates, converter aspect ratio, inlet cone angle, and inlet pipe offset. The numerical results were used to study the velocity profile at the inlet to the substrate, and were verified with experimental measurements of velocity and BP.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Characterization of a Catalytic Converter Internal Flow


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    Powertrain & Fluid Systems Conference and Exhibition ; 2007



    Erscheinungsdatum :

    29.10.2007




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Characterization of a catalytic converter internal flow

    Ramadan,B.H. / Lundberg,P.C. / Richmond,R.P. et al. | Kraftfahrwesen | 2007


    Characterization of a Catalytic Converter Internal Flow

    Ramadan, B.H. / Lundberg, P.C. / Richmond, R.P. et al. | British Library Conference Proceedings | 2007


    Three-dimensional simulations of automotive catalytic converter internal flow

    Lai,M.C. / Kim,J.Y. / Cheng,C.Y. et al. | Kraftfahrwesen | 1991


    Three-Dimensional Simulations of Automotive Catalytic Converter Internal Flow

    Cheng, C.-Y. / Chui, G. / Pakko, J. D. et al. | SAE Technical Papers | 1991


    Acoustic characterization of internal combustion engine exhaust system - the catalytic converter

    Podevon,P. / Descombes,G. / Mille,D. et al. | Kraftfahrwesen | 2001