Using what has become a celebrated catchphrase, Philip W. Anderson once wrote that
“more is different”(Science, Vol. 177, Issue 4047, pp. 393–396, 1972). First formulated in the …

Modeling and direct numerical simulation of particle-laden flows have a tremendous variety
of applications in science and engineering across a vast spectrum of scales from pollution …

An efficient approach for the simulation of finite-size particles with interface resolution was
presented by Uhlmann [M. Uhlmann, An immersed boundary method with direct forcing for …

We present a collision model for particle-particle and particle-wall interactions in interface-
resolved simulations of particle-laden flows. Three types of interparticle interactions are …

A numerical method based upon the immersed boundary technique for the fluid–solid
coupling and on a soft-sphere approach for solid–solid contact is used to perform direct …

Coarse graining is an important ingredient in many multi-scale continuum–discrete solvers
such as CFD–DEM (computational fluid dynamics–discrete element method) solvers for …

We present a collision model for phase-resolved Direct Numerical Simulations of sediment
transport that couple the fluid and particles by the Immersed Boundary Method. Typically, a …

It has been recognized that, generally, large particles enhance the turbulence intensity,
while small particles attenuate the turbulence intensity. However, there has been no …

Particle-wall collisions appear in many different processes of particle technology. During a
collision, different micro processes, such as friction, plastic deformation and adhesion can …

Particle‐resolved direct numerical simulations (PR‐DNS) of a simplified experimental
shallow fluidized bed and a laboratory bubbling fluidized bed are performed by using …