Investigation On Flow And Energy Transport Of Magnetic Fluids By Using The Lattice Boltzmann Method

The lattice Boltzmann method is a novel approach of numerical simulation for fluid hydrodynamics. It originates from the discrete movement theory and statistic physics and has been applied to fluid flow and heat transfer simulation. In this paper, the lattice Boltzmann method is applied to investigate properties of magnetic fluids.This paper introduces the Lattice Boltzmann method and its two important models. The effective volumetric lattice Boltzmann scheme is put forward to deal with low viscosity cases. The models of dealing with the force terms are also introduced in the paper and some examples such as phase separation and natural convection in cavity are simulated. The appropriate lattice Boltzmann models for magnetic fluids are established to investigate the drop deformation, the magnetic fluid structure and flow patter as well as heat transfer process. For such purposes, the basic properties and dynamical properties of magnetic fluids as well as the external and internal forces acting on magnetic nanoparticles are described. Numerical Simulations are carried out.Computational results for the magnetic fluids illustrate that the lattice Boltzmann method can effectively deal with the complicated forces and potentials acting on the suspended magnetic nanoparticles and simulate the behaviors of the magnetic fluids on the mesoscale level.