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RESEARCH PAPERS

Numerical Study of the Steady Axisymmetric Flow Through a Disk-Type Prosthetic Heart Valve in a Constant Diameter Chamber

[+] Author and Article Information
F. N. Underwood

Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Ind.; Wright-Patterson AFB, Ohio

T. J. Mueller

Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Ind.

J Biomech Eng 99(2), 91-97 (May 01, 1977) (7 pages) doi:10.1115/1.3426278 History: Received March 14, 1977; Online October 21, 2010

Abstract

Numerical solutions for the steady axisymmetric flow through a disk-type prosthetic heart valve were obtained for Reynolds numbers from 20 to 1300. Stream function, vorticity, and shear and normal stress plots are presented. Comparison of the length of the separated flow region downstream of the disk with experimental data shows good agreement through Reynolds number 500. The maximum value of the shear stress occurred on the upstream corner of the disk. These detailed results clearly identify regions of very high shear and normal stresses (erythrocyte deformation or damage), regions of very low or very high shear stress at walls (atheromatous lesions), and the extent of separated or reverse flow regions (thrombosis).

Copyright © 1977 by ASME
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