We numerically investigate the propelled motions of a Janus particle in a periodically phase-separating binary fluid mixture. In this study, the surface of the particle tail prefers one of the binary fluid components and the particle head is neutral in the wettability. During the demixing period, the more wettable phase is selectively adsorbed to the particle tail. Growths of the adsorbed domai...

Microfluidic continuous cell separation based on hydrodynamic interaction in a microfluidic channel has attracted attention because of its robustness, high throughput and cell viability. This paper systematically gives an overview on recent advances in hydrodynamic particle and cell separation in microfluidic devices. It presents the basic ideas and fluid mechanics for the hydrodynamic interact...

We consider one-dimensional, locally finite interacting particle systems with two conservation laws which under Eulerian hydrodynamic limit lead to two-by-two systems of conservation laws: { ∂tρ + ∂xΨ(ρ, u) = 0 ∂tu + ∂xΦ(ρ, u) = 0, with (ρ, u) ∈ D ⊂ R, where D is a convex compact polygon in R. The system is typically strictly hyperbolic in the interior of D with possible non-hyperbolic degenera...

An extension of the classical hydrodynamic model for semiconductor devices to include quantum transport e€ects is reviewed. This ``smooth'' quantum hydrodynamic (QHD) model is derived speci®cally to handle in a mathematically rigorous way the discontinuities in the classical potential energy which occur at heterojunction barriers in quantum semiconductor devices. A conservative upwind discretiz...

A Large Eddy Simulation of a fully developed turbulent open-channel flow with Reynolds number Re=71,755 was performed to study dynamics coherent structures in the vicinity stationary sediment particle. The particle positioned at bottom on smooth channel bed. impulse concept employed by computing three-dimensional hydrodynamic forces acting order predict onset motion. Results quadrant analyses h...

In this review, a theoretical description is provided for the solid (granular) phase of the gas-solid flows that are the focus of this book. Emphasis is placed on the fundamental concepts involved in deriving a macroscopic hydrodynamic description for the granular material in terms of the hydrodynamic fields (species densities, flow velocity, and the granular temperature) from a prescribed “mic...

Large-scale simulations of non-Brownian rigid fibers sedimenting under gravity at zero Reynolds number have been performed using a fast algorithm. The mathematical formulation follows the previous simulations by Butler and Shaqfeh f“Dynamic simulations of the inhomogeneous sedimentation of rigid fibres,” J. Fluid Mech. 468, 205 s2002dg. The motion of the fibers is described using slender-body t...

In this work, three different particle sizes: the static radius Rs, hydrodynamic radius Rh and apparent hydrodynamic radius Rh,app obtained using the light scattering technique, are investigated for dilute poly-disperse homogenous spherical particles with a simple assumption that the hydrodynamic radius is in proportion to the static radius, when the Rayleigh-Gans-Debye approximation is valid. ...