Lattice-Boltzmann simulations of particles in non-zero-Reynolds-number flows

A lattice-Boltzmann method has been developed to simulate suspensions of bo th spherical and non-spherical particles in finite-Reynolds-number flows. T he results for sedimentation of a single elliptical particle are shown to b e in excellent agreement with the results of Huang, Hu & Joseph (1998) who used a finite-element method. Sedimentation of two-dimensional circular and rectangular particles in a two-dimensional channel and three-dimensional s pherical particles in a tube with square cross-section is simulated. Comput ational results are consistent with experimentally observed phenomena, such as drafting, kissing and tumbling.