The Flow Over Two-Dimensional Surface-Mounted Obstacles at Low Reynolds Numbers

[+] Author and Article Information
C. D. Tropea, R. Gackstatter

Lehrstuhl fur Strömungsmechanik, University of Erlangen-Nürnberg, Egerlandstr. 13, 8520 Erlangen, Federal Republic of Germany

J. Fluids Eng 107(4), 489-494 (Dec 01, 1985) (6 pages) doi:10.1115/1.3242518 History: Received October 04, 1984; Online October 26, 2009


The flow over a fence and a block mounted in a fully developed channel flow is experimentally investigated as a function of the Reynolds number, blockage ratio and length-to-height ratio using a laser-Doppler-anemometer. The information obtained includes the location and size of the primary and secondary recirculation zones, and profiles of the mean streamwise velocity component. The experiments were carried out in a channel for a Reynolds number in the range 150 < ReH < 4500. Comparisons are drawn between the obstacle flow and the backward-facing step flow.

Copyright © 1985 by ASME
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