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Application of a Virtual-Boundary Method for the Numerical Study of Oscillations Developing Behind a Cylinder Near A Plane Wall |
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| Authors: | E. Kit N. V. Nikitin V. M. Shmidt A. Yakhot |
| Affiliation: | (1) Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei, 10607, Taiwan;(2) Department of Applied Mathematics, Feng Chia University, Taichung, 40742, Taiwan |
| Abstract: | The conditions of onset and the character of the oscillations developing behind a circular cylinder located above a plane wall (screen) in a flow with a velocity profile of the boundary layer type are studied numerically. The dependence of the critical Reynolds number (at which a steady flow regime in the wake behind the cylinder is replaced by an oscillatory regime) on the cylinder-wall gap and the free-stream boundary layer thickness is found. |
| Keywords: | two-dimensional Navier-Stokes equations finite-element method unsteady flow critical Reynolds number Strouhal number |
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