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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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.
|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.|
|Subject Keywords:||Blood flow; Fluid–structure interaction; Arterial wave reflection; Computer modeling|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Jason Perez|
|Deposited On:||02 May 2011 21:30|
|Last Modified:||02 May 2011 21:30|
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