This study examines a new hybrid particle scheme used as an alternative means of multiscale flow simulation. The hybrid particle scheme employs the direct simulation Monte Carlo (DSMC) method in rarefied flow regions and the low diffusion (LD) particle method in continuum flow regions. The numerical procedures of the low diffusion particle method are implemented within an existing DSMC algorith...

The present paper provides a mathematical model for particle motion in viscous flow between rotating cylinders. Using an assumption that the mass fraction of particles in the flow is small, so the perturbations of the mean liquid flow due to the presence of particles is negligible, 3D liquid flow was simulated using an exact solution of the Navier-Stokes equations. Particle motion under action ...

a two-dimensional single particle finite element model was used to examine the effects of particle fragmental pattern on the average molecular weights, polymerization rate and particle overheating in heterogeneous ziegler-natta olefin polymerization. a two-site catalyst kinetic mechanism was employed together with a dynamic two-dimensional molecular species in diffusion-reaction equation. the i...

The behaviour of a granular flow a t a boundary cannot be specified independently of what is happening in the rest of the flow field. This paper describes a study of two fictitious, but instructive, flat boundary types using a computer simulation of a twodimensional granular flow with the goal of trying to understand the possible effects of the boundary on the flow. The two boundary conditions,...