Abstract
Vortex shedding phenomena from circular cylinders imposes oscillatory flow induced forces on these structures. Splitter-plates in the downstream/upstream of the circular cross section cylinder could be embedded in order to reduce flow induced forces and suppress vortex shedding. In this Article, flow over a circular cylinder with detached short splitter-plate is numerically simulated by solving two dimensional, unsteady, and viscous flow fields. Implemented Method is based on finite-volume approach on Cartesian-staggered grid. In addition, the ghost-cell method in conjunction with Great Source Term technique is employed to enforce directly no-slip condition on the cylinder boundary. The accuracy of the solver is validated by simulation of the flow over a single circular cylinder. The results are in excellent agreement with the experiments reported in the literature. Eventually, the flow over a circular cylinder with splitter-plate in its downstream in Re=40, 100 and 150,Your browser may not support display of this image. and Your browser may not support display of this image. (where D is the cylinder diameter, G and Z the horizontal and vertical distances between leading edge of the splitter-plate and the cylinder base) are simulated and analyzed. Critical values of G and Z where vortex shedding is fully suppressed is calculated. The results show that the critical values are significantly dependent on the G and Z.
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