RT Journal Article ID 1b3d96514f6f8bab A1 Rahmati, Ahmad Reza A1 Ashrafizaadeh, Mahmud A1 Shirani, Ebrahim T1 Novel Hybrid Finite-Difference Thermal Lattice Boltzmann Models for Convective Flows JF Heat Transfer Research JO HTR YR 2009 FD 2009-11-13 VO 40 IS 8 SP 747 OP 775 K1 lattice Boltzmann method (LBM); HT-FV-MRT-LBM; HT-ELBM AB In this article, two Hybrid Thermal Lattice Boltzmann (HTLB) methods are proposed to simulate thermally driven flows. In these methods, the velocity field is solved by a Fractional Volumetric Multi Relaxation Time Lattice Boltzmann (FV-MRT-LB) scheme and an En-tropic Lattice Boltzmann (ELB) method, while the advection-diffusion equation for temperature is solved separately by a finite difference technique. In order to demonstrate the ability of the FV-MRT-LB and ELB methods for simulation of isothermal flows, a two-dimensional cavity-driven flow has been simulated at different Reynolds numbers. Then two classical cases of buoyancy-induced flows, i.e., a differentially heated cavity flow and a Rayleigh-Be′nard convective flow, have been studied numerically at different Rayleigh numbers with a Prandtl number of 0.71. The numerical results show that both HT-FV-MRT-LB and HT-ELB methods can produce accurate results. PB Begell House LK https://www.dl.begellhouse.com/journals/46784ef93dddff27,07ec599e27b8a631,1b3d96514f6f8bab.html