Arteriovenous (AV) grafts, which provide an access site for hemodialysis, typically produce a high flow rate environment with pressure and velocity fluctuations; high and low wall shear stress, and vibration. Laser Doppler anemometry (LDA) was performed at Reynolds number (Re) 1200 on an in vitro model, which was constructed from computerized tomography (CT) images of a perfusion fixed plastic cast of a canine venous anastomosis. The results obtained were compared to numerical results and to results previously obtained with idealized in vitro models. This study showed the importance of an accurate geometry in characterizing the flow environment inside an AV graft. Good agreement between the computational fluid dynamics (CFD) and LDA was observed although differences were clearly present.
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ASME 2004 International Mechanical Engineering Congress and Exposition
November 13–19, 2004
Anaheim, California, USA
Conference Sponsors:
- Bioengineering Division
ISBN:
0-7918-4703-9
PROCEEDINGS PAPER
Velocity Measurements Inside a Hemodialysis Graft In Vitro Model
David S. Smith,
David S. Smith
University of Illinois at Chicago
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Francis Loth,
Francis Loth
University of Illinois at Chicago
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Hisham S. Bassiouny,
Hisham S. Bassiouny
University of Chicago
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Paul Fischer,
Paul Fischer
Argonne National Laboratory (MCS Division)
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Jennifer K. Grogan,
Jennifer K. Grogan
University of Chicago
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Sang-Wook Lee
Sang-Wook Lee
University of Illinois at Chicago
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David S. Smith
University of Illinois at Chicago
Francis Loth
University of Illinois at Chicago
Hisham S. Bassiouny
University of Chicago
Paul Fischer
Argonne National Laboratory (MCS Division)
Jennifer K. Grogan
University of Chicago
Sang-Wook Lee
University of Illinois at Chicago
Paper No:
IMECE2004-62031, pp. 55-56; 2 pages
Published Online:
March 24, 2008
Citation
Smith, DS, Loth, F, Bassiouny, HS, Fischer, P, Grogan, JK, & Lee, S. "Velocity Measurements Inside a Hemodialysis Graft In Vitro Model." Proceedings of the ASME 2004 International Mechanical Engineering Congress and Exposition. Advances in Bioengineering. Anaheim, California, USA. November 13–19, 2004. pp. 55-56. ASME. https://doi.org/10.1115/IMECE2004-62031
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