The paper presents the numerical results obtained with the use of the ANSYS FLUENT commercial code for analysing the flow structure around a two rectangular inline surface-mounted bluff bodies immersed in a boundary layer. The calculation of a configuration with a flow around objects has been performed using both the steady and unsteady approaches (RANS, uRANS). Effects of the inflow boundary layer thickness on the velocity and pressure field, wall shear stress and the grid resolution accuracy in predicting periodic vortex shedding from two bodies in a tandem arrangement was examined. It has been observed that the separation length is considerably reduced with an increase in the δ/H parameter.

This research was supported in part by PL-Grid Infrastructure.