Numerical simulation of flow around two 5:1 rectangular cylinders at a high Reynolds Number

Abstract

The unsteady flows around two stationary rectangular cylinders with a chord-to-thickness ratio of B/D = 5 at ReD = 2 × 105 (based on the free stream velocity and the width length D), are investigated using two-dimensional Unsteady Reynolds-Averaged Navier-Stokes equations with a standard k − ω SST turbulence model. The computational model is validated by carrying out simulation of the flow around a single rectangle and comparing the hydrodynamic quantities (time-averaged drag coefficient, root-mean-square of fluctuating lift coefficient) with the previous published data. The aim of the present study is to study the influence of the relative positions between the two rectangular cylinders on their hydrodynamic quantities and the surrounding flow fields.