Author(s)

A. DiCarlo, P. Nardinocchi, G. Pontrelli & L. Teresi

Abstract

A heterogeneous approach for modelling blood flow in an arterial segment A. Di Carlo', P. Nardinocchi2, G. Pontrelli3, L. Teresil ' ~ i ~ a r t i m e n t o di Ingegneria Civile Universita di "Roma Tre", Roma, Italy 2~ipartimeizto di Ingegneria Strutturale e Geotecnica Universita di Roma "La Sapienza", Roma, Italy .'Istituto per le Applicazioni del Calcolo CNR - Roma, Italy Abstract A differential model of blood flow through an arterial vessel is presented. The flow equations averaged across the wall thickness are in conjunction with the equation of the compliant wall modelled as an elastic axisymmetric membrane. Such onedimensional model describing the nonlinear fluid-wall interaction is coupled with a six compartment lumped parameter model which accounts for the global circulatory features. The full nonlinear equations are approximated by using a numerical finite difference method on a staggered grid. Some numerical simulations show the characteristics of the wave propagation and the depend

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