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A Physiologically Relevant, Simple Outflow Boundary Model for Truncated Vasculature

Pahlevan, Niema M. and Amlani, Faisal and Gorji, M. Hossein and Hussain, Fazle and Gharib, Morteza (2011) A Physiologically Relevant, Simple Outflow Boundary Model for Truncated Vasculature. Annals of Biomedical Engineering, 39 (5). pp. 1470-1481. ISSN 0090-6964. http://resolver.caltech.edu/CaltechAUTHORS:20110502-112731201

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Abstract

A realistic outflow boundary condition model for pulsatile flow in a compliant vessel is studied by taking into account physiological effects: compliance, resistance, and wave reflection of the downstream vasculature. The new model extends the computational domain with an elastic tube terminated in a rigid contraction. The contraction ratio, the length, and elasticity of the terminal tube can be adjusted to represent effects of the truncated vasculature. Using the wave intensity analysis method, we apply the model to the test cases of a straight vessel and the aorta and find good agreement with the physiological characteristics of blood flow and pressure. The model is suitable for cardiac transient (non-periodic) events and easily employed using so-called black box software.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1007/s10439-011-0246-0DOIUNSPECIFIED
http://www.springerlink.com/content/2655631n84u5t575/PublisherUNSPECIFIED
Additional Information:© 2011 Biomedical Engineering Society. Received 14 August 2010; accepted 3 January 2011; published online 15 January 2011. Associate Editor Peter E. McHugh oversaw the review of this article.
Group:GALCIT
Subject Keywords:Blood flow; Fluid–structure interaction; Arterial wave reflection; Computer modeling
Record Number:CaltechAUTHORS:20110502-112731201
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20110502-112731201
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:23524
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:02 May 2011 21:30
Last Modified:30 Sep 2016 17:35

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