LDA Measurements and Numerical Prediction of Pulsatile Laminar Flow in a Plane 90-Degree Bifurcation

[+] Author and Article Information
J. M. Khodadadi, N. S. Vlachos

University of Illinois at Urbana-Champaign, Department of Mechanical and Industrial Engineering, Urbana, IL 61801

D. Liepsch, S. Moravec

Fachhochschule München, Fachrichtung Versorgungstechnik, 8000 München 2, Federal Republic of Germany

J Biomech Eng 110(2), 129-136 (May 01, 1988) (8 pages) doi:10.1115/1.3108417 History: Received May 26, 1987; Revised January 05, 1988; Online June 12, 2009


An experimental and numerical study of pulsatile laminar flow in a plane 90-degree bifurcation is presented. Detailed LDA velocity measurements of the oscillatory flow field have been carried out. The numerical predictions, which are based on an iterative, finite-difference numerical procedure using primitive dependent variables, are in good agreement with the measurements. The results show that one separation zone is established near the bottom wall of the main duct and another near the upstream wall of the branch. The location and size of the separation zones vary within the cycle and are influenced by the Reynolds number, the flow rate ratio, and the Stokes number.

Copyright © 1988 by ASME
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