this work investigates the response of two-dimensional, turbulent boundary layer characteristics over a flat plate to the presence of suspended particulate matter. both phases are assumed to be interacting continua. that is, the carrier fluid equations are considered to be coupled with the particle-phase equations. a finite-difference technique with non-uniform grid has been employed for the so...

Using high-speed imaging, the different stages of drop detachment from a capillary are studied for viscoelastic suspension spherical particles dispersed in dilute polymer solution. The dynamics can be rationalized by recognizing contributions and make to properties solution way these effects influence time scales deformation breakup process.

Dip coating consists of withdrawing a substrate from bath to coat it with thin liquid layer. This process is well understood for homogeneous fluids, but heterogeneities, such as particles dispersed in liquid, lead more complex situations. Indeed, introduce new length scale, their size, addition the thickness film. Recent studies have shown that, at first order, film monodisperse can be captured...

Concentrated particulate suspensions under vibrations can support stable, localized, vertically oriented free surfaces. The most robust of these structures are persistent holes: deep and stable depressions of the interface. Using a reduced model of the hydrodynamics we show that a rheology with hysteresis can lead to motion opposite to the time-averaged applied force. Moreover, we show experime...

We present an efficient, accurate, and robust method for simulation of dense suspensions of deformable and rigid particles immersed in Stokesian fluid in two dimensions. We use a well-established boundary integral formulation for the problem as the foundation of our approach. This type of formulation, with a high-order spatial discretization and an implicit and adaptive time discretization, hav...

Optical manipulation of particulate-loaded, highly scattering (opaque) suspensions is considered impossible. Here we demonstrate theoretically and experimentally optical manipulation of the local properties of such opaque suspensions. We show that the optical forces exerted by multiply-scattered light give rise to dense shock fronts of particle concentration, propagating deep inside the opaque ...

A critical review is presented of recent experimental and theoretical work on the steady sedimentation of particulate suspensions in viscous ̄ uids. The point of view is that of a practitioner of non-equilibrium statistical physics rather than classical ̄ uid mechanics.