Numerical Simulation of Steady Flow in a Model of the Aortic Bifurcation

[+] Author and Article Information
M. Thiriet, C. Pares, E. Saltel, F. Hecht

LBHP, URA CNRS 343, Université Paris 7, 75251 Paris cedex 05 and INRIA, BP 105, 78153 Le Chesnay cedex, France

J Biomech Eng 114(1), 40-49 (Feb 01, 1992) (10 pages) doi:10.1115/1.2895448 History: Received August 19, 1991; Online March 17, 2008


The governing equations of steady flow of an incompressible viscous fluid through a 3-D model of the aortic bifurcation are solved with the finite element method. The effect of Reynolds number on the flow was studied for a range including the physiological values (200≤Re≤1600). The symmetrical bifurcation, with a branch angle of 70 degrees and an area ratio of 0.8, includes a tapered transition zone. Secondary flows induced by the tube curvature are observed in the daughter tubes. Transverse currents in the transition zone are generated by the combined effect of diverging and converging walls. Flow separation depends on both the Reynolds number and the inlet wall shear.

Copyright © 1992 by The American Society of Mechanical Engineers
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