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Hysteresis of Flow Around an Elliptic Cylinder in Critical Reynolds Number Regime

[+] Author Affiliations
Terukazu Ota, Ken-ichiro Ueda, Hiroyuki Yoshikawa

Tohoku University, Sendai, Japan

Paper No. HT-FED2004-56141, pp. 143-149; 7 pages
  • ASME 2004 Heat Transfer/Fluids Engineering Summer Conference
  • Volume 1
  • Charlotte, North Carolina, USA, July 11–15, 2004
  • Conference Sponsors: Heat Transfer Division and Fluids Engineering Division
  • ISBN: 0-7918-4690-3 | eISBN: 0-7918-3740-8
  • Copyright © 2004 by ASME


Experimental investigations of the flow around an elliptic cylinder of axis ratio 1:2 were carried out for several angles of attack in a wide range of Reynolds number. The flow characteristics were studied by measuring the fluid forces and the surface pressure. In the critical Reynolds number regime, a discontinuous change of flow state was observed. This change was accompanied by the remarkable hysteresis phenomenon. The fluctuation of fluid forces and surface pressure, in general, markedly decreases in the critical flow state.

Copyright © 2004 by ASME



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