Journal
JOURNAL OF FLUIDS AND STRUCTURES
Volume 23, Issue 7, Pages 1064-1076Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jfluidstructs.2007.02.004
Keywords
circular cylinder; ground effect; vortex shedding; strouhal number
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Funding
- National Research Foundation of Korea [과C6A1808] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Flow over a circular cylinder near a moving plane wall is simulated numerically. The influence of the moving wall on the vortex shedding from the cylinder is demonstrated and the corresponding mechanism is illustrated using instability theory. A critical gap ratio between the circular cylinder and the moving wall is defined, and a precise method for determining the critical gap ratio is proposed. The drag and lift forces and the pressure coefficient are presented as a function of the gap ratio. The scaling of the Strouhal number is discussed. (C) 2007 Elsevier Ltd. All rights reserved.
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