A numerical simulation of vortex motion behind a circular cylinder above a horizontal plane boundary
- Inha Univ., Inchon (Korea, Republic of)
- Korea Research Inst. of Ships and Ocean Engineering, Daejeon (Korea, Republic of)
The vortex motions behind a circular cylinder placed at several heights above a horizontal plane boundary are simulated numerically. A cylinder is aligned with its axis normal to the free stream and parallel to a flat partition plate used for the numerical generation of the horizontal plane surface. And it is placed 36 diameters downstream of the leading edge of the plate and the gaps between the cylinder and the plate are 0.1, 0.3 and 0.4 cylinder diameters. A finite difference method based on the unsteady Navier-Stokes equations and continuity equation is used for the numerical simulation of vortex shedding at a Reynolds number, based on cylinder diameter, of 4.5 {times} 10{sup 4}. Also a sub-grid-scale turbulence model is incorporated into the present method for the simulation of the complicated turbulent flow behind the cylinder. The computed velocity vectors, streamlines, vorticity and pressure contour are presented for each gap size. The mean pressure distributions along the cylinder surface and the plane boundary are also shown and favorably compared with the experimental results.
- OSTI ID:
- 404217
- Report Number(s):
- CONF-940409--; ISBN 1-880653-10-9
- Country of Publication:
- United States
- Language:
- English
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