Oscillating Flow Past a Rigid Circular Cylinder: A Finite-Difference Calculation

[+] Author and Article Information
Xuegeng Wang, Charles Dalton

Department of Mechanical Engineering, University of Houston, Houston, TX 77204-4814

J. Fluids Eng 113(3), 377-383 (Sep 01, 1991) (7 pages) doi:10.1115/1.2909507 History: Received May 01, 1990; Online May 23, 2008


A finite-difference study of the sinusoidally oscillating flow past a fixed circular cylinder is made using vorticity and stream function as the dependent variables. Calculations are performed for conditions which lead to both a symmetric wake and an unsymmetric wake. The Reynolds number ranges from 100 to 3000 and the Keulegan-Carpenter number ranges from 1 to 12. A hybrid differencing scheme is introduced to provide a stable for large values of the parameters. Good comparison to flow visualization results and calculated force coefficients is found. The results are given a physical interpretation for the various vortex patterns observed.

Copyright © 1991 by The American Society of Mechanical Engineers
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