Y. Dabiri, N. Fatouraee, and H. Katoozian (Iran)
Arterial Branch, Stenosis, and Peripheral Bed.
The goal of this research is to develop a computer code that will simulation behavior of blood flow in arterial network and will determine pressure and flow in various points of the network. The main assumptions in physical modeling are: 1- blood flow is one dimensional and in axial direction; 2- arteries are elastic cylindrical tubes; 3-blood flow is laminar. The analysis approach is finite element method. Three types of elements were used: 1- artery element for an unobstructed healthy artery, 2- branch element for three or more artery element connections and 3- stenosis element for an arterial stenosis. Peripheral beds at the ends of the arteries have been electrically modeled in two ways: 1- as pure resistance model that relates pressure and flow in arteries outlet with a constant coefficient and 2- as developed Windkessel model that comprises of one capacitance and one resistance in series and a resistance in parallel with them. Result of a model of femoral artery shows that: a) the changes in flow and pressure waves predicted by computer simulation agree well with those obtained in experiments both in a healthy model and in stenosed one. b) pure resistance model for peripheral beds produces stronger wave reflection in comparison with developed Windkessel model.
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