A study of the effect of flow pulsations on the flow distribution within ceramic contoured catalyst substrates

Stephen F. Benjamin, Carol A. Roberts, J. Wollin

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Abstract

This study examines the effect of pulsating flow on the flow distribution through contoured substrates. Three ceramic contoured substrates of equal volume were assessed. Two of the substrates were cone shaped with different cone angles and one had a dome shaped front face. The flow distribution was measured for a range of flow rates and pulsation frequencies. Computational Fluid Dynamics (CFD) simulations were also performed. It is shown how a contoured substrate can provide improvements in flow uniformity and that they are less sensitive to changes in flow rate and pulsation frequency when compared to the case of a standard substrate. Improvements in the prediction of flow distribution are reported when substrate “entrance effects” are accounted for. Publisher statement: Copyright © 2001 SAE International. This paper is posted on this site with permission from SAE International and is for viewing only. It may not be stored on any additional repositories or retrieval systems. Further use or distribution is not permitted without permission from SAE.
Original languageEnglish
PublisherSAE
Publication statusPublished - 2001

Publication series

NameSAE Technical Paper
PublisherSAE

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Bibliographical note

Copyright © 2001 SAE International. This paper is posted on this site with permission from SAE International and is for viewing only. It may not be stored on any additional repositories or retrieval systems. Further use or distribution is not permitted without permission from SAE.

Keywords

  • automotive
  • emissions
  • emissions control
  • ceramics
  • catalytic converters

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