Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
Flows of elasto-viscoplastic materials approximated by a stabilized finite element method
Submission Author:
Vitor Dal Bo Abella , Procurando endereço...
Co-Authors:
Vitor Dal Bo Abella, Natan Alexandre de Oliveira, Sergio Frey
Presenter: Vitor Dal Bo Abella
doi://10.26678/ABCM.COBEM2019.COB2019-1016
Abstract
The present work studies the flow of an elasto-viscoplastic fluid through a sudden four-to-one contraction. Mechanical modeling makes use of an Oldroyd-B viscoelastic equation modified to allow that either the elastic times or the polymeric viscosity are rheology-dependent. A three-field Galerkin least-squares method is used in terms of extra-stress, velocity, and pressure, to approximate the model. Results focus on the influence of the flow intensity on the yield surfaces, elasticity and relaxation time. Clear interlace is verified between these parameters and the position and shape of yield surfaces.
Keywords
Elasto-viscoplasticity, Sudden Contraction, stabilized method, elastic-viscoplastic materials
