Numerical Study of the Drag Reduction and Forced Convection Around Rectangular Block by Using the LBM Method

Abstract

This research aims to study flow control for reducing aerodynamic drag and cooling a rectangular electronic component using an inclined partition. Unlike existing studies focusing on horizontal or vertical plates, this work numerically investigates the impact of an inclined partition on flow and temperature fields using the lattice Boltzmann method with multiple relaxation times. Results show that increasing the Reynolds number enhances heat exchange and reduces the drag coefficient, with a maximum Cd reduction of 125.41% at Re = 250. Additionally, at Re = 150, positioning the partition at g = 2d achieves a Cd reduction of 130.97%. For effective cooling of electronic components, placing a sloping partition at g = 2d before the component yields significant energy savings.