| Fluid flow in porous systems. | |
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MedLine Citation:
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PMID: 9803889 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Nuclear magnetic resonance (NMR) measurements of water velocity flowing through glass bead packs with a bead diameter of 10 mm have been made using the phi echo-planar imaging (PEPI) sequence. These results indicate that for various flow rates the flow variance is proportional to the mean flow velocity in agreement with the Mansfield-Issa equation. The velocity distributions are approximately Gaussian. Investigation of the slopes of the variance vs. velocity curves as a function of slice thickness indicate some coherence effects in the connectivity of the glass bead system. An extension of an earlier intervoxel coupling model is presented, which seems to explain the observed coherence effects. |
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Authors:
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P Mansfield; M Bencsik |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Magnetic resonance imaging Volume: 16 ISSN: 0730-725X ISO Abbreviation: Magn Reson Imaging Publication Date: 1998 Jun-Jul |
Date Detail:
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Created Date: 1999-02-24 Completed Date: 1999-02-24 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 8214883 Medline TA: Magn Reson Imaging Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 451-4 Citation Subset: IM |
Affiliation:
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Department of Physics, University of Nottingham, UK. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Echo-Planar Imaging* Humans Magnetic Resonance Spectroscopy* Normal Distribution Particle Size Phantoms, Imaging* Porosity Rheology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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