Numerical Simulation of Flow Interference Between Two Circular Cylinders in Tandem and Side-By-Side Arrangements (original) (raw)

The shedding of vortices and #ow interference between two circular cylinders in tandem and side-by-side arrangements are investigated numerically in this paper. A Fractional Step Method is used for the simulations and the #ow is assumed two-dimensional. The calculations are carried out on a three-noded unstructured mesh. The simulations are performed for a Reynolds number range varying from 100 to 200, and the #ow is solved through the "nite-element method. The mesh is "ner close to the cylinder wall in order to have a better description of the boundary layer. Vorticity contours of the #ow around the cylinders and force time histories are presented. The calculations are also compared to the experimental results obtained by Bearman & Wadcock in 1973 and Williamson in 1985. The numerical simulations, in this sense, complement their work with very detailed vorticity calculations and #ow visualizations. 2001 Academic Press.