Toshihiko Umekage

TL;DR: In this paper, the Navier-Stokes equation and the Lagrangian type particle equation were simultaneously solved, where the drag and lift forces on particles, the multi-body collisions among particles and the mutual interaction between air and particles were taken into account.

TL;DR: In this article, the effect of particle existence on subgrid-scale flows has been taken into account in a large eddy simulation (LES) model in which the effects of the particle existence are considered.

TL;DR: In this paper, a group-B particle turbulent fluidized bed is numerically simulated and the locally averaged three-dimensional Navier-Stokes equations and the Lagrangian particle equations, in which the mutual interactions between air and particles and the two-body collisions between particles were simultaneously solved.

TL;DR: In this article, the authors have numerically simulated the particle and gas flows in the raceway region in an actual blast furnace of which dimension is the same as that of the commercial blast furnace using Distinct Element Method for the computation of the multi-body interaction among coke particles, Hard Sphere Model for two body interaction of powder particles based on Direct Simulation of Monte-Carlo Method and Finite Difference Method for numerical analysis of Navier-Stokes equations with the interaction terms between gas and particles for the gas flows.

TL;DR: In this paper, the motion of particles discharging from a rectangular hopper has been numerically simulated by the distinct element method (DEM) whose time steps are Δt = 10−6, 10−5 and 10−4s, which correspond to stiffness kn = 7.0 × 107.