PMID: 8964780Apr 1, 1996Paper

Formation and travel of vortices in model ventricles: application to the design of skeletal muscle ventricles

Journal of Biomechanics
A P ShortlandS Salmons

Abstract

Vortex-ring production was studied in axisymmetric elastomeric ventricles designed to stimulate flow in a cardiovascular assist device. A flow visualization technique was used to investigate the effects of reducing the inlet diameter and predilating the ventricle on vortex travel in two ventricles of different shape and size. In most cases, vortex rings formed during the filling phase. They were bounded by the incoming jet of fluid and the ventricular wall. The velocity of their centres during the filling period was proportional to the inflow velocity. During filling, vortex velocity was substantially independent of the shape and diameter of the two ventricles studied. It was dependent mainly on orifice diameter: a narrower inlet led to greater inflow velocities and proportionately greater vortex velocities. At the end of the filling phase, each vortex increased in size to occupy the full radial extent of the ventricle. This process was associated with a decrease in the axial velocity and strength of the vortex. At low flow rates, these losses resulted in the arrest of the vortex at end filling. Vortex motion in ventricles is particularly important in the design of a cardiovascular device such as the skeletal muscle ventricle (...Continue Reading

References

May 1, 1979·Microvascular Research·T Karino, H L Goldsmith
Aug 1, 1988·The Annals of Thoracic Surgery·J D Hill
Nov 1, 1985·Artificial Organs·S HashimotoT Sasada
Mar 1, 1972·Cardiovascular Research·B J Bellhouse
Jan 1, 1981·Journal of Biomechanics·H ReulE W Müller
Feb 1, 1996·Journal of Biomechanics·A P ShortlandS Salmons

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Citations

Feb 8, 2013·Annals of Biomedical Engineering·John J CharonkoPavlos P Vlachos
Feb 1, 1996·Journal of Biomechanics·A P ShortlandS Salmons
Sep 1, 1996·Artificial Organs·A P ShortlandS Salmons
Feb 24, 2001·Journal of Biomechanical Engineering·J A VierendeelsP R Verdonck
Feb 1, 1997·Journal of Biomechanical Engineering·F S HenryS Salmons
Sep 11, 2012·American Journal of Physiology. Heart and Circulatory Physiology·Kelley C StewartPavlos P Vlachos
Jan 12, 2005·European Journal of Heart Failure·Bart W L De BoeckMaarten-Jan M Cramer
Apr 17, 2007·Ultrasound in Medicine & Biology·Tom E ClaessensPascal R Verdonck
Oct 18, 2014·Journal of the American College of Cardiology·Pablo Martínez-LegazpiJuan C del Álamo
Jan 6, 2012·Computer Methods and Programs in Biomedicine·Amal Ahmed OwidaYos S Morsi
Mar 16, 2004·Journal of Cardiac Surgery·Stanley SalmonsLarry Stephenson
Mar 25, 2014·Journal of Biomechanical Engineering·Xudong ZhengRajat Mittal
Oct 24, 2003·Medical & Biological Engineering & Computing·A P ShortlandS Salmons
Jan 15, 2014·American Journal of Physiology. Heart and Circulatory Physiology·Javier BermejoJuan C Del Álamo
Sep 21, 2000·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·M L RoseD J Wheatley

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