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Rheological model of a dilute emulsion
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
1988 (English)In: Tribology Transactions, ISSN 1040-2004, E-ISSN 1547-397X, Vol. 31, no 1, p. 83-90Article in journal (Refereed) Published
Abstract [en]

The viscosity of an emulsion, consisting of oil droplets and surrounding water, is highly dependent on the position of the droplets during fluid transport. To better understand this rheological phenomenon, the migration of nylon spheres of various densities, flowing through a vertical, rectangular channel was studied. The results from the present experiments show that spheres which have lower density than the fluid always migrate to the center of the channel, almost independent of density difference and sphere size. If on the other hand, the spheres are only slightly more dense than the fluid, they will reach an equilibrium position near, or at one of the channel walls. If the spheres are still denser than the fluid they will reach an equilibrium position somewhere between the wall and the center of the channel. This position depends on the sphere size.

Place, publisher, year, edition, pages
1988. Vol. 31, no 1, p. 83-90
National Category
Other Civil Engineering
Research subject
Operation and Maintenance
Identifiers
URN: urn:nbn:se:ltu:diva-3269Local ID: 113dafa0-8cb8-11de-8da0-000ea68e967bOAI: oai:DiVA.org:ltu-3269DiVA, id: diva2:976125
Note
Godkänd; 1988; 20090819 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Lundberg, Jan

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