Computation of heat transfer and fluid flow in an obstructed channel using lattice Boltzmann method
Résumé
Laminar flow and heat transfer characteristics in a two-dimensional horizontal channel with two square blocks placed side-by-side are numerically investigated. The numerical scheme is based on a coupling between the lattice Boltzmann method and the finite difference method. The effect of the dimensionless separation distance G between the two obstacles on the fluid flow and the heat transfer is examined. Results are obtained for G ranging from 0 to 3 at Re=700, Re being the Reynolds number based on the channel height. Results show that the flow behaviors and the heat transfer are strongly dependent of the non-dimensional separation distance G of the blocks.