Journal of Mechanical Science and Technology

  • 제19권3호
  • /
  • Pages.877-886
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  • 2005
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  • 1738-494X(pISSN)
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  • 1976-3824(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
권호 표지

Unsteady Viscous Flow over Elliptic Cylinders At Various Thickness with Different Reynolds Numbers

  • Kim Moon-Sang (School of Aerospace and Mechanical Engineering, Hankuk Aviation University) ;
  • Sengupta Ayan (Department of Aerospace Engineering, Iowa State University)
  • 발행 : 2005.03.01
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초록

Two-dimensional incompressible Navier-Stokes equations are solved using SIMPLER method in the intrinsic curvilinear coordinates system to study the unsteady viscous flow physics over two-dimensional ellipses. Unsteady viscous flows over various thickness-to-chord ratios of 0.6, 0.8, 1.0, and 1.2 elliptic cylinders are simulated at different Reynolds numbers of 200, 400, and 1,000. This study is focused on the understanding the effects of Reynolds number and elliptic cylinder thickness on the drag and lift forces. The present numerical solutions are compared with available experimental and numerical results and show a good agreement. Through this study, it is observed that the Reynolds number and the cylinder thickness affect significantly the frequencies of the force oscillations as well as the mean values and the amplitudes of the drag and lift forces.

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참고문헌

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