Dynamic Flow Study in a Catalytic Converter Using Laser Doppler Velocimetry and High Speed Flow Visualization

950786

02/01/1995

Event
International Congress & Exposition
Authors Abstract
Content
Internal flow characteristics of a close coupled catalytic converter were examined by LDV measurements and high speed flow visualization. Although previous studies have been done on catalytic converters, they were conducted at steady state and using water flow seeded with a small quantity of tracer particles. The purpose of this study was to develop a better understanding of dynamic flows inside catalytic converters.
The high speed flow visualization films and LDV results showed that areas of separation and circulation were present in the inlet region of the converter. Backflows into the neck of the converter were also observed. Each cylinder exhausted into a different region of the converter, with the front-middle region having the heaviest amount of flow. Large bursts of flow were created by each cylinder, while other regions of the inlet region showed backflows or very low flow rates. The midsection of the converter had a more uniform overall flow pattern.
Meta TagsDetails
DOI
https://doi.org/10.4271/950786
Pages
20
Citation
Hwang, K., Lee, K., Mueller, J., Stuecken, T. et al., "Dynamic Flow Study in a Catalytic Converter Using Laser Doppler Velocimetry and High Speed Flow Visualization," SAE Technical Paper 950786, 1995, https://doi.org/10.4271/950786.
Additional Details
Publisher
Published
Feb 1, 1995
Product Code
950786
Content Type
Technical Paper
Language
English