Extensional flow through microfabricated hyperbolic contractions

• Tipo: Artigo em Livro de Atas de Conferência Nacional
• Data: 2006

Autores

Mónica S. Neves Oliveira (Autor) FEUP; Manuel A. Alves (Autor) FEUP; Gareth H. McKinley (Autor) Outra; Fernando T. Pinho (Autor) FEUP

Ata de Conferência Nacional

Título: ACTA DA CONFERÊNCIA NACIONAL DE MÉTODOS NUMÉRICOS EM MECÂNICA DOS FLUIDOS E TERMODINÂMICA 2006

Páginas: 1-17

CONFERÊNCIA NACIONAL DE MÉTODOS NUMÉRICOS EM MECÂNICA DOS FLUIDOS E TERMODINÂMICA 2006

Lisboa, Portugal, 8-9 Junho, 2006

Outras Informações

Abstract (EN): Experiments and numerical simulations are used to investigate the extensional flow through a 3-D planar hyperbolic micro-contraction. A converging geometry with a Hencky strain of two was designed to produce a constant extensional rate along the centerline. This configuration was used for the examination of Newtonian flows at low to moderate Reynolds numbers and viscoelastic flows at low Deborah numbers. Numerical simulations of the flow in the micro-contractions were obtained from a finite-volume method using non-orthogonal block-structured collocated meshes. The numerical results are compared to experimental measurements. For the base case of Newtonian flow, the numerical predictions show good agreement with experiments. We also report preliminary results for a semi-dilute solution of polyethylene oxide.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 17