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TECHNICAL PAPERS

PIV Investigations of the Flow Field in the Volute of a Rotary Blood Pump

[+] Author and Article Information
John M. Sankovic

Dept. of Biomedical Engineering, Case Western Reserve University, 10900 Euclid Ave., Cleveland, Ohio 44106   National Aeronautics and Space Administration, John H. Glenn Research Center, 21000 Brookpark Rd., M/S 77-5, Cleveland, Ohio 44135

Jaikrishnan R. Kadambi, Mehul Mehta

Dept. of Mechanical and Aerospace Engineering, Case Western University, 10900 Euclid Ave., Cleveland, Ohio 44106

William A. Smith

Dept. of Biomedical Engineering, The Lerner Research Center, The Cleveland Clinic Foundation, 9500 Euclid Ave., Cleveland, Ohio 44195

Mark P. Wernet

National Aeronautics and Space Administration, John H. Glenn Research Center, 21000 Brookpark Rd., M/S 77-1, Cleveland, Ohio 44135

J. Fluids Eng 126(5), 730-734 (Dec 07, 2004) (5 pages) doi:10.1115/1.1789529 History: Received March 10, 2003; Revised January 21, 2004; Online December 07, 2004
Copyright © 2004 by ASME
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References

Figures

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Impeller and casing of acrylic model of blood pump
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Pressure-flow curves for pump operating at various speeds utilizing sodium iodide solution
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Schematic diagram of PIV experimental setup
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Sample PIV image showing impeller blade position, volute exit, and diffuser
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Velocity vector maps of volute exit and diffuser region at various impeller speeds at maximum flow condition: (a) 3000 rpm, (b) 3430 rpm, (c) 3850 rpm.
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Similarity of velocity vectors at various points across the volute at location Y=16.5 mm: (a) Velocity magnitude normalized to tip speed, (b) velocity vector angle relative to diffuser axis.
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Velocity vector maps of volute exit and diffuser region at various impeller speeds at 90 mmHg pressure rise: (a) 3000 rpm, (b) 3430 rpm, (c) 3850 rpm
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Reynolds shear stress levels depicted as mean uv(m2/s2): (a) 3850 rpm, 5.1/min/15.8 mmHg. (b) 3000 rpm, 1.8/min/90 mmHg
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Shear rate levels in volute (s−1)

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