Abstract

In this paper, the Large Eddy Simulation (LES) flow modeling technique is used to solve the Navier-Stokes equations. In this, the effect of the stress components from the small structures is modeled by the Smagorinsky flow model. This mathematical model is used for the flow through a square cylinder at two different Reynolds number conditions Re = 400 and Re = 22,000. The computed results of the average flow and the features of the multi-dynamic components are compared with the results obtained from the DNS (Direct Numerical Simulation) method and the k-ε model, demonstrating the benefits of this method. Simultaneously, these results also align well with the experimental results at the same Reynolds number conditions.
Air flows through a square cylinder with a side of 1 cm under standard conditions with a temperature of 2930K, atmospheric pressure, and a kinetic coefficient of 1.513 *10-5 m2/s. Reynols number is 22000.