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The effect of cartilaginous rings on particle deposition by convection and Brownian diffusion
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0002-8739-1934
Umeå universitet.
2010 (English)In: Natural Science, ISSN 2150-4091, E-ISSN 2150-4105, Vol. 2, no 7, p. 769-779Article in journal (Refereed) Published
Abstract [en]

A finite volume method for the numerical solution of viscoelastic flows is given. The flow of a differential upper-convected Maxwell (UCM) fluid through a contraction channel has been chosen as a prototype example. The conservation and constitutive equations are solved using the finite volume method (FVM) in a staggered grid with an upwind scheme for the viscoelastic stresses and a hybrid scheme for the velocities. An enhanced-in-speed pressure-correction algorithm is used and a method for handling the source term in the momentum equations is employed. Improved accuracy is achieved by a special discretization of the boundary conditions. Stable solutions are obtained for higher Weissenberg number (We), further extending the range of simulations with the FVM. Numerical results show the viscoelasticity of polymer solutions is the main factor influencing the sweep efficiency.

Place, publisher, year, edition, pages
2010. Vol. 2, no 7, p. 769-779
National Category
Fluid Mechanics and Acoustics
Research subject
Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-15894DOI: 10.4236/ns.2008.27097Local ID: f75f22b0-5cd9-11df-ab16-000ea68e967bOAI: oai:DiVA.org:ltu-15894DiVA, id: diva2:988870
Note
Validerad; 2010; 20100511 (stlu)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-28Bibliographically approved

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Publisher's full texthttp://www.scirp.org/Journal/Abstract.aspx?paperID=2311&JournalID=69

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Åkerstedt, Hans O.Högberg, SofieLundström, Staffan

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