Particle-scale computational approaches to model dry and saturated granular flows of non-Brownian, non-cohesive, and non-spherical rigid bodies

A Wachs - Acta Mechanica, 2019 - Springer
We discuss methods to compute the flow of non-Brownian, non-cohesive, and non-spherical
rigid bodies immersed in a single homogeneous fluid. We address both the case of …

A critical review of physical models in high temperature multiphase fluid dynamics: Turbulent transport and particle-wall interactions

N Jain, A Le Moine… - Applied …, 2021 - asmedigitalcollection.asme.org
This review article examines the last decade of studies investigating solid, molten, and liquid
particle interactions with one another and with walls in heterogeneous multiphase flows …

Modulation of turbulence intensity by heavy finite-size particles in upward channel flow

Z Yu, Y **a, Y Guo, J Lin - Journal of Fluid Mechanics, 2021 - cambridge.org
It has been recognized that, generally, large particles enhance the turbulence intensity,
while small particles attenuate the turbulence intensity. However, there has been no …

A particle-resolved direct numerical simulation method for the compressible gas flow and arbitrary shape solid moving with a uniform framework

B Meng, J Zeng, S Li, B Tian, J Liu - Computer Physics Communications, 2024 - Elsevier
Compressible particle-resolved direct numerical simulations (PR-DNS) are widely used in
explosion-driven dispersion of particles simulations, multiphase turbulence modelling, and …

Effects of the collision model in interface-resolved simulations of particle-laden turbulent channel flows

Y **a, H **ong, Z Yu, C Zhu - Physics of Fluids, 2020 - pubs.aip.org
The effects of the particle collision model in a direct-forcing fictitious domain method on the
fluid and particle statistics of a fully developed turbulent channel flow laden with finite-size …

Interface-resolved direct numerical simulations of the interactions between spheroidal particles and upward vertical turbulent channel flows

C Zhu, Z Yu, D Pan, X Shao - Journal of Fluid Mechanics, 2020 - cambridge.org
The interactions between finite-size spheroidal particles and upward turbulent flows in a
vertical channel are numerically simulated with a direct-forcing fictitious domain method at …

Improved modelling of interfacial terms in the second-moment closure for particle-laden flows based on interface-resolved simulation data

Y **a, Z Yu, Z Lin, Y Guo - Journal of Fluid Mechanics, 2022 - cambridge.org
Correlations for the interfacial terms in the fluid dissipation rate equation and Reynolds
stress equations are established for particle-laden flows, based on data from the interfaced …

Effects of particle-fluid density ratio on the interactions between the turbulent channel flow and finite-size particles

Z Yu, Z Lin, X Shao, LP Wang - Physical Review E, 2017 - APS
A parallel direct-forcing fictitious domain method is employed to perform fully resolved
numerical simulations of turbulent channel flow laden with finite-size particles. The effects of …

A simple and efficient parallel immersed boundary-lattice Boltzmann method for fully resolved simulations of incompressible settling suspensions

M Jiang, J Li, Z Liu - Computers & Fluids, 2022 - Elsevier
This study presents an efficient and parallel fully resolved direct numerical simulation (FR-
DNS) of settling suspensions on multiple CPU cores based on the boundary-thickening …

Drag model from interface-resolved simulations of particle sedimentation in a periodic domain and vertical turbulent channel flows

Y **a, Z Yu, D Pan, Z Lin, Y Guo - Journal of Fluid Mechanics, 2022 - cambridge.org
A drag correlation is established for laminar particle-laden flows, based on data from the
interfaced-resolved direct numerical simulations (IR-DNS) of particle sedimentation in a …