Computational Analysis of Harmonically Oscillating Lid-Driven Incompressible Fluid in L-Shaped Cavity Using Lattice Boltzmann Method

Abstract

The present study explores the use of the lattice Boltzmann method to simulate incompressible flows in L-shaped cavities with and without the presence of circular obstacles. Fluid flow characteristics within the L-shaped cavity are studied for single- and double-wall driven cases, for both parallel and antiparallel motions. An understanding of the effect of the Reynolds number and of the presence of cylindrical obstacles on the flow topology are sought after within the present work. To this end, the effect is studied by the velocity profiles and flow structure focused through streamline patterns. The phase difference for oscillating-wall-motion in the L-shaped cavity with obstacles is also explored. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.