Modeling of blood flow in the human aorta with use of an orthotropic nonlinear material model for the walls

Milos Kojic, Nenad Filipovic, Ivo Vlastelica, Miroslav Zivkovic

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

We present a computational procedure and results for modeling of blood flow within the ascending human aorta, including all arterial branches and coronary arteries. We assume pulsatile blood flow and deformable walls. A 3D fluid domain is considered. The Arbitrary-Lagrangian-Eulerian (ALE) formulation and the implicit computational algorithm [1] for laminar viscous incompressible fluid flow is used. The blood walls are modeled by shell finite elements [2,3]- We introduce an orthotropic nonlinear material model, represented by a family of stress-stretch curves, to model the wall material behavior. The model is an extension of a uniaxial model [4]. We propose a computational procedure for the stress calculation for this material model. A loose coupling algorithm is used in solving the sohd-fluid interaction [5]. The described computational procedures are implemented in our FE program PAK [6].

Original languageEnglish (US)
Title of host publicationComputational Fluid and Solid Mechanics 2003
PublisherElsevier
Pages1751-1754
Number of pages4
ISBN (Print)9780080529479, 9780080440460
DOIs
StatePublished - Jun 2 2003

Keywords

  • Blood flow
  • Human aorta
  • Orthotropic nonhnear material
  • REM
  • Solid-fluid interaction

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint Dive into the research topics of 'Modeling of blood flow in the human aorta with use of an orthotropic nonlinear material model for the walls'. Together they form a unique fingerprint.

Cite this