Coupled Simplified Lattice Boltzmann Method Study on Thermal Flows

In this chapter, the effect of heated length and temperature gradient orientation on the mixed convection flow in a lid-driven cavity is numerically studied, using the recently proposed coupled simplified lattice Boltzmann method (CSLBM) (Gao et al. 2021). CSLBM has been validated by comparison with the literature, and the convergence analysis as well as the grid independence test are also carried out to confirm the accuracy of the conveyed results. Four representative dimensionless heated lengths between 0 and 1, and typical temperature gradient orientations, namely vertical upward are selected to investigate the joint effects of the Richardson number, temperature gradient orientation, and length of the heat source on heat transfer.