Please use this identifier to cite or link to this item:

Title: Numerical Simulation of the Motion of Rigid Particles in Generalized Newtonian Fluids using a Hyper-Viscosity Method
Authors: Carapau, Fernando
Janela, João
Sequeira, Adélia
Keywords: Constrained minimization,
hyper-viscosity method,
fluid-rigid body interaction,
shear-thinning fluid
Issue Date: 1-Dec-2006
Citation: WSEAS Transactions on Mathematics, Issue 4, Volume 5, pp. 366-373, 2006.
Abstract: We present a new numerical method to handle fluid-rigid body interaction problems. The analysis is carried out for incompressible generalized Newtonian fluids, but more general constitutive equations can be considered with little changes in the method. The work is motivated by the investigation of interaction problems occurring in the human cardiovascular system. In this framework the rigid bodies may be blood particles, clots, valves or any structure that we may assume to move rigidly in blood. This method is based in a variational formulation of the fully coupled problem in the whole fluid/solid domain, in which constraints are introduced to enforce the rigid motion of the body and the equilibria of forces and stresses at the interface. The main feature of the method consists in introducing a penalty parameter that relaxes the constraints and allows for the solution of an associated unconstrained problem. The convergence of the solution of the relaxed problem is established and some numerical simulations are performed using common benchmarks for this type of problems.
ISSN: 1109-2769
Type: article
Appears in Collections:CIMA - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

Files in This Item:

File Description SizeFormat
Janela_Sequeira_Carapau_TM.pdf3.13 MBAdobe PDFView/OpenRestrict Access. You can Request a copy!
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpaceOrkut
Formato BibTex mendeley Endnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Dspace Dspace
DSpace Software, version 1.6.2 Copyright © 2002-2008 MIT and Hewlett-Packard - Feedback
UEvora B-On Curriculum DeGois