title: Direct numerical simulation of dispersed particles in a compressible fluid.
abstract: We present a direct numerical simulation method for investigating the dynamics of dispersed particles in a compressible solvent fluid. The validity of the simulation is examined by calculating the velocity relaxation of an impulsively forced spherical particle with a known analytical solution. The simulation also gives information about the fluid motion, which provides some insight into the particle motion. Fluctuations are also introduced by random stress, and the validity of this case is examined by comparing the calculation results with the fluctuation-dissipation theorem.
authors.affiliation: Department of Chemical Engineering, Kyoto University, Kyoto 615-8510, Japan. tatsumi@cheme.kyoto-u.ac.jp
authors.forename: Rei
authors.initials: R
authors.lastname: Tatsumi
authors.forename: Ryoichi
authors.initials: R
authors.lastname: Yamamoto
mesh_terms: D000465:Algorithms; D003102:Colloids / Q000737:chemistry*; D019245:Compressive Strength; D003198:Computer Simulation; D008956:Models, Chemical; D010316:Particle Size; D012212:Rheology / Q000379:methods*; D012996:Solutions / Q000737:chemistry*
chemical_list: D003102:Colloids; D012996:Solutions