Pulsatile Flow in an End-to-Side Vascular Graft Model: Comparison of Computations With Experimental Data

[+] Author and Article Information
M. Lei

Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD 21205

D. P. Giddens

Department of Biomedical Engineering, Georgia Institute of Technology/Emory University School of Medicine, Atlanta, GA 30332

S. A. Jones

Department of Biomedical Engineering, Louisiana Tech University, Ruston, LA 71272

F. Loth

Department of Mechanical Engineering and Bioengineering, University of Illinois at Chicago, Chicago, IL 60607

H. Bassiouny

Department of Vascular Surgery, University of Chicago School of Medicine, Chicago, IL 60637

J Biomech Eng 123(1), 80-87 (Sep 29, 2000) (8 pages) doi:10.1115/1.1336145 History: Received January 27, 1999; Revised September 29, 2000
Copyright © 2001 by ASME
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Grahic Jump Location
Physiological flow waveforms at the graft inlet (Qg) and the proximal and distal artery outlets (Qp,Qd) (after 34)
Grahic Jump Location
X-component velocity profiles in the symmetry plane in comparison with the LDA data of Loth 34 at four representative time steps: (a) flow acceleration phase (t1), (b) flow deceleration phase (t2), (c) reverse flow phase (t3), and (d) peak diastolic flow phase (t4)
Grahic Jump Location
Path of stagnation point movement along the arterial floor. Experimental data are from Loth 34.
Grahic Jump Location
Wall shear stress variations at selected points in comparison with the experimental data of Loth 34: (a) inlet region, (b) hood region, and (c) toe region
Grahic Jump Location
Distribution patterns of: (a) mean wall shear stress (w|), (b) spatial wall shear stress gradient (|SWSSG|), (c) temporal wall shear stress gradient (|TWSSG|), and (d) oscillating shear index (OSI) on the three-dimensional surface at the anastomotic site
Grahic Jump Location
Geometric configuration of the distal anastomosis model. Here, POS=proximal outlet section; DOS=distal outlet section. The diameter of the artery is 3.5 mm in vivo and 31.5 mm in the scaled up experimental model. The graft-to-artery diameter ratio is 1.6.



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