Simulation of viscoelastic flow through constrictions.

Peter Szabo, J. M. Rallison, E. J. Hinch

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Abstract

The flow of a FENE-fluid through a 4:1:4 constriction in a tube is computed by a split Lagrangian-Eulerian finite element method.In steady flow it is found that the upstream vortex grows with increasing Deborah number, while the downstream vortex diminishes and disappears.The steady pressure drop decreases with Deborah number unless the finite extensibility, L, is quite small. Starting from rest at high Deborah number, the upstream vortex grows in two stages, each with their own time scales. A simple model of this growth is proposed.
Original languageEnglish
Title of host publicationAnnual Transaction of the Nordic Rheology Society
PublisherNordic Rheology Society
Publication date1997
Pages51-53
Publication statusPublished - 1997
EventNordic Rheology Conference 1997 - Reykjavik, Iceland
Duration: 6 Aug 19979 Aug 1997
http://projekt.sik.se/nrs/conference/Old%20conferences/conf1997/Undre_Conf1997.htm

Conference

ConferenceNordic Rheology Conference 1997
CountryIceland
CityReykjavik
Period06/08/199709/08/1997
Internet address

Cite this

Szabo, P., Rallison, J. M., & Hinch, E. J. (1997). Simulation of viscoelastic flow through constrictions. In Annual Transaction of the Nordic Rheology Society (pp. 51-53). Nordic Rheology Society.