David Smith


Dave Smith, BS
Phd. Student in ME
(2002 - Present)

Phone: (312) 413-7408
Laboratory: 1036 ERF

click here for my schedule

Research Interests
arteriovenous graft failure, laser doppler anemometry, in-vivo experimentation, heat exchangers, heat transfer enhancements, image processing, flow model building, computational fluid dynamics, energy conservation, alternative energy methods


Biomechanical Mechanisms in Arteriovenous Graft Failure
Goal: Perform in-vitro flow simulations of the in-vivo experiments done at U of C. These simulations will provide an accurate description of the flow field present in Arteriovenous Grafts.
In the in-vivo experiments at U of C, flow rates and vibration levels in the venous anastomosis are recorded along with CT images of the anastomosis. These images are processed and used to build a 3-dimensional model of the flow region with the rapid prototype machine. This rp model is used to as a mold to form a sylgard model, which is then an accurate three dimensional model of the same anastomosis that the flow rates and vibrations were recorded on.

Flow Rig Setup

flow_rig_big.gif (46270 bytes)

The three dimensional models built are tested on the lab's flow rig, which is capable of reproducing the same Reynolds numbers measured in-vivo. Laser Doppler Anemometry are performed on these models producing the time varying velocity distributions throughout the anastomosis. The experimental results obtained are compared to the numerical results of Sang Wook Lee to validate the team's numerical model.

Re = 1200, Flow Split = 100:0

Vector Plot Comparison

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4 Cross Section Mean Axial Velocity Comparison

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Re = 1200, Flow Split = 70:30

5 Cross Section Mean Axial Velocity Comparison

70_cross.gif (96921 bytes)

3 Cross Section Velocity Fluctuation Comparison (RMS)

70_cross_rms.gif (102645 bytes)










University of Illinois at Chicago
The Department of Mechanical & Industrial Engineering
2039 Engineering Research Facility
842 W. Taylor Street Chicago, IL 60607
312.996.5318 phone / 312.413.0447 fax

Last site update: November 15, 2004
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