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RESEARCH PAPERS: Additional Research Papers

A Numerical Study of the Shape of the Surface Separating Flow Into Branches in Microvascular Bifurcations

[+] Author and Article Information
G. Enden, A. S. Popel

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

J Biomech Eng 114(3), 398-405 (Aug 01, 1992) (8 pages) doi:10.1115/1.2891401 History: Received December 16, 1990; Revised November 27, 1991; Online March 17, 2008

Abstract

The shape of the separating surface formed by the streamlines entering the branches of microvascular bifurcations plays a major role in determining the distribution of red blood cells and other blood constituents downstream from the bifurcation. Using the finite element method, we determined the shape of the surface through numerical solution of three dimensional Navier-Stokes equations for fluid flow at low Reynolds numbers in a T-type bifurcation of circular tubes. Calculations were done for a wide range of daughter branch to parent vessel diameter ratios and flow ratios. The effect of Reynolds number was also studied. Our numerical results are in good agreement with previously reported experimental data of Rong and Carr (Microvascular Research, Vol. 39, pp. 186-202, 1990). The numerical results of this study will be used to predict the concentration of blood constituents downstream from microvascular bifurcations providing that the inlet concentration profile is known.

Copyright © 1992 by The American Society of Mechanical Engineers
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