A four element visco-elastic windkessel model of the arterial tree

Virag, Zdravko and Lulić, Fabijan and Korade, Ivan (2012) A four element visco-elastic windkessel model of the arterial tree. = A four element visco-elastic windkessel model of the arterial tree. In: 29th Danubia-Adria-Symposium on Advances in Experimental Mechanics, 26.-29.09.2012., Beograd, Srbija.

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Official URL: http://bib.irb.hr/prikazi-rad?rad=608089

Abstract

The simplest lumped model of the arterial tree can be represented by a viscoelastic chamber: with the heart at the inlet and capillary bed at outlet. The arterial wall impedance follows from a constitutive pressure-diameter relationship and depending on the model of this relationship, different lumped model can be derived. The goal is to derive a new four-element windkessel model and to compare it to the popular four-element windkessel model (WK4), in terms of their ability to mimic the measured arterial input impedance. The proposed model and WK4 model have been applied to the measured aortic root pressure and aortic valve flow in three typical subjects of different ages. Model parameters were identified by minimizing RMSE between measured and calculated pressure by prescribing measured aortic valve flow. In all cases the proposed model results in lower RMSE and during diastole reconstructs better the measured pressure than the WK4 model.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): visco-elastic, windkessel model, arterial tree, WK4
Subjects: TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 1400 Department of fluid mechanics > 1410 Chair of computer fluid mechanics
500 Department of Energy, Power Engineering and Environment > 520 Chair of Fluid Mechanics
Indexed in Web of Science: No
Indexed in Current Contents: No
Citations SCOPUS: 0 (13.09.2017.)
Date Deposited: 08 Apr 2016 10:48
Last Modified: 13 Sep 2017 12:48
URI: http://repozitorij.fsb.hr/id/eprint/5514

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