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Magnetic Resonance Imaging of the Internal and External Hydrodynamics in Wall-flow Particulate Filters
Technical Paper
2019-01-2286
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Magnetic resonance imaging (MRI) has been used to investigate gas flow in diesel and gasoline particulate filters, exploring gas flow both within the channels and also at the entrance and exit of the filters (expansion and contraction effects). The latter measurement can be used to measure turbulent diffusivity in the filter bulk flow characteristics, and therefore estimate the importance of entrance and exit effects in contributing to overall filter back pressure as the filter properties and/or exhaust flow changes (i.e. with Reynolds number). The former measurement gives information that can be used to evaluate filter performance, in particular with respect to filtration efficiency, and examples will be shown from our measurements on diesel filter systems.
Authors
- Jonathan D. Cooper - Department of Chemical Engineering and Biotechnology, West C
- Lynn F. Gladden - Department of Chemical Engineering and Biotechnology, West C
- Andrew J. Sederman - Department of Chemical Engineering and Biotechnology, West C
- Andrew P.E. York - Johnson Matthey Technology Centre, Blount's Court, Sonning C
Citation
Cooper, J., Gladden, L., Sederman, A., and York, A., "Magnetic Resonance Imaging of the Internal and External Hydrodynamics in Wall-flow Particulate Filters," SAE Technical Paper 2019-01-2286, 2019, https://doi.org/10.4271/2019-01-2286.Data Sets - Support Documents
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