The Vortex Shedding Suppression and Heat Transfer Characteristics Around a Heated Square Cylinder by Using Three Downstream-Detached Partitions

A numerical study of the fluid flow and thermal convection phenomena around a heated square cylinder controlled by three downstream partitions is performed. The numerical simulations are performed at a fixed Reynolds number (Re = 150) using the multiple relaxation time-lattice Boltzmann method (DMRT-LBM). The purpose of implementing partitions is to control the vortex shedding and improve the characteristics of the heat transfer around the squares cylinder. The numerical results are presented as contours of the streamlines, the isotherms lines and the time drag coefficient. These results indicate that there is a critical gap spacing g = 2.25 between the square cylinder and the control partitions. At this crucial distance, a maximum percentage reduction of the drag coefficient exceeds 11.19%, also, regular and important heat exchange is observed. The numerical code has been validated with existing numerical and experimental investigations in the literature for a flow around a square cylinder without and with a single detached partition.