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FFS - FLUID STRUCTURE SEPARATION FOR MODELING
FLOWS IN COMPLIANT ARTERIES

Alexander Yakhot
Ben-Gurion University, Beersheva, Israel

At the heart of the computer-aided analysis of blood flows in vessels
is simulating hemodynamics (a) coupled with clinical measurements, (b) in
realistic geometry domains, and (c) considering possible coupling with
arterial structural dynamics. The latter should be taken into account and
carefully modeled as a fluid-structure interaction (FSI) problem. A patient-
specific FSI analysis is impossible because it predicts only estimated
hemodynamic features which are based on assumptions regarding material
properties. The objective of this study is to develop a new methodology
that assimilates medical imaging data for quantitative hemodynamic data
extraction. The new method avoids all uncertainties and difficulties
related to structural mechanical properties of the arterial wall. It is
based on acquisition of arterial wall displacements directly from medical
images for further incorporating into the CFD simulations. As opposite to
the FSI, we call this new approach Fluid-Structure Separation (FSS).