Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/91421
Author(s): Mónica S. Neves Oliveira
Manuel A. Alves
Gareth H. McKinley
Fernando T. Pinho
Title: Extensional flow through microfabricated hyperbolic contractions
Issue Date: 2006
Abstract: Experiments and numerical simulations are used to investigate the extensionalflow through a 3-D planar hyperbolic micro-contraction. A converging geometry with aHencky strain of two was designed to produce a constant extensional rate along thecenterline. This configuration was used for the examination of Newtonian flows at low tomoderate Reynolds numbers and viscoelastic flows at low Deborah numbers. Numericalsimulations of the flow in the micro-contractions were obtained from a finite-volumemethod using non-orthogonal block-structured collocated meshes. The numerical resultsare compared to experimental measurements. For the base case of Newtonian flow, thenumerical predictions show good agreement with experiments. We also report preliminaryresults for a semi-dilute solution of polyethylene oxide.
URI: https://repositorio-aberto.up.pt/handle/10216/91421
Source: ACTA DA CONFERÊNCIA NACIONAL DE MÉTODOS NUMÉRICOS EM MECÂNICA DOS FLUIDOS E TERMODINÂMICA 2006
Document Type: Artigo em Livro de Atas de Conferência Nacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Livro de Atas de Conferência Nacional

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