A Numerical Study of Vortex Shedding From a Square Cylinder With Ground Effect

[+] Author and Article Information
Robert R. Hwang, Chia-Chi Yao

Institute of Physics, Academia Sinica, Taipei, Taiwan

J. Fluids Eng 119(3), 512-518 (Sep 01, 1997) (7 pages) doi:10.1115/1.2819274 History: Received April 01, 1996; Revised April 01, 1997; Online December 04, 2007


A numerical study has been conducted to investigate the behavior of the vortical wake created by a square cylinder placed in a laminar boundary-layer flow. The calculations are performed by solving the unsteady 2D Navier-Stokes equations with a finite-volume method. The Reynolds-number regime investigated is from 500 to 1500. Another parameter that is varied is the distance of the cylinder from the wall. The initial and subsequent development of the vortex shedding phenomenon are investigated. The presence of the wall is found to have strong effects on the properties of these vortices, as well as lift, drag, and Strouhal number.

Copyright © 1997 by The American Society of Mechanical Engineers
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