Nano-fluid Flow And Energy Transfer In The Lattice Boltzmann Method

The lattice Boltzmann method is a new approach of numerical simulation. It comes from the discrete movement and statistics theory. It has been applied to simulate fluid flow and heat transfer. In this paper, the lattice Boltzmann method is applied to investigate flow and energy transport of nanofluids. Also, parallel computation method is used.Considering Brownian force, dispersion force arising from the interaction potential, drag force and gravitational force, a two-dimensional multicomponent lattice Boltzmann model for nanofluids is developed. A nonuniform rectangular mesh method and curve boundary condition are discussed. Efficiency, load balance and domain plot of the parallel model have also been analyzed.Some basic characteristics of the nanofluids are described. The Brownian motion of nanofluids improves the suspension and distribution of the nanoparticles and intensify the energy transport process inside the nanofluids.With introducing heat exchange among the particles into equilibrium distribution function, a thermal lattice Boltzmann model for the nanofluids is developed. The flow behavier of nanofluids is simulated and the heat transfer coefficient of nanofluids is calculated.