COMPUTATIONAL COUPLING SOLUTION STRATEGIES FOR LARGE SCALE MULTI-FIELD PROBLEMS IN PARTICULATE SYSTEMS
This paper reviews a number of advanced computational techniques within a general coupled Lattice Boltzmann-Discrete Element solution framework for the modeling of particle transport in incompressible fluid flows, with or without the presence of a thermal phase. Turbulent incompressible fluid flows are simulated by the Lattice Boltzmann (LB) formulation with the incorporation of the Smagorinsky turbulence model. The particle motions and their interaction are modeled by the Discrete Element Method (DEM). The hydrodynamic interactions between fluid and particles are fully realised through one direct fluid-particle interaction scheme. The linear LB formulation is then extended to non-Newtonian fluid regimes, enabling the modelling of fine particle migration problems encountered, e.g. in mass mining operations. The double population based thermal LB approach permits the modelling of heat transfer phenomena in fluid-particle systems, while the newly proposed discrete thermal element method further enhances the computational efficiency of heat conduction in a system involving many particles. The combination of some or all of these techniques offers an advanced and powerful predictive computational tool for the simulation of many important engineering problems.
Lattice Boltzmann method Discrete element method Fluid-particle interaction Smagorinsky turbulence model Fine particle migration Discrete thermal analysis
Y.T.Feng K.Han C.R.Leonardi D.R.J.Owen
Civil and Computational Engineering Centre,School of Engineering Swansea University,SA2 8PP,UK
国际会议
北京
英文
24-45
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）