Abstract
Natural convection in L-shaped geometries has many applications in many branches of engineering science, such as cooling of electronic equipment, nuclear reactors, and design of ventilation systems. The present paper studied the natural convective heat transfer and flow field in differentially heated L-shaped enclosures with viscous fluid using the multi-relaxation time lattice Boltzmann method (LBM-MRT). The study investigates the effect of the edge of L-shaped geometry on fluid flow and temperature field. We have also investigated the effect of non-dimensional parameters like Rayleigh number in the range of (10(3)-10(7)) and Prandtl number (0.71, 1, 7). Nusselt number (Nu) and average Nu are also calculated along heated walls to study the heat transfer behavior.