| Particle pressure in a sheared suspension: a bridge from osmosis to granular dilatancy. | |
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MedLine Citation:
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PMID: 19392165 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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The normal stress exerted by particles in a sheared suspension is measured by analogy with a method used to measure osmotic pressure in solutions. Particles in a liquid are confined by a fine screen to a gap between two vertical concentric cylinders, the inner of which rotates. Pressure in the liquid is sensed either by a manometer or by a pressure transducer across the screen. The particles are large enough so that Brownian motion and equilibrium osmotic pressure are vanishingly small. The measured pressure yields the shear-induced particle pressure Pi, the nonequilibrium continuation of equilibrium osmotic pressure. For volume fractions 0.3< or =varphi< or =0.5, Pi is strongly dependent on varphi, and linear in shear rate. Comparisons of the measured particle pressure with modeling and simulation show good agreement. |
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Authors:
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Angélique Deboeuf; Georges Gauthier; Jérôme Martin; Yevgeny Yurkovetsky; Jeffrey F Morris |
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Publication Detail:
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Type: Journal Article Date: 2009-03-09 |
Journal Detail:
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Title: Physical review letters Volume: 102 ISSN: 0031-9007 ISO Abbreviation: Phys. Rev. Lett. Publication Date: 2009 Mar |
Date Detail:
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Created Date: 2009-04-27 Completed Date: 2009-05-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401141 Medline TA: Phys Rev Lett Country: United States |
Other Details:
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Languages: eng Pagination: 108301 Citation Subset: - |
Affiliation:
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Univ Pierre et Marie Curie-Paris6, Univ Paris-Sud, CNRS, Laboratoire FAST, Campus universitaire d'Orsay, 91405 Orsay Cedex, France. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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