Imbibition, the displacement of a nonwetting fluid by wetting fluid, plays central role in diverse energy, environmental, and industrial processes. While this process is typically studied homogeneous porous media with uniform permeabilities, many cases, have multiple parallel strata different permeabilities. How such stratification impacts dynamics imbibition, as well saturation after breaks th...

Much work has been done to understand the settling dynamics of spherical particles in a homogeneous and stratified fluid. However, effects shape anisotropy on particle fluid are not completely understood. To this end, we perform numerical simulations for oblate prolate spheroids We present results Galileo number, $Ga$ , range 80–250 Richardson $Ri$ 0–10. find that both reorient edge-wise partia...

This paper presents a novel approach for estimation of available bandwidth on access links using stratified probing. The main challenges of performing such estimations in this network part is related to the bursty nature of cross-traffic and the related uncertainty regarding appropriate time period for producing sample estimates. Under the fluid flow traffic model assumption, these problems wou...

The influence of gas bubbles on the properties of internal waves in a continuously stratified fluid is studied in the framework of a two-dimensional model of a diluted monodisperse mixture of an incompressible fluid with gas bubbles. The model takes into account surface tension on the walls of the bubbles and an effective viscosity. The dispersion relation is obtained for linear waves in the Bo...

a frequency-wavenumber-domain formulation is presented in this paper for calculation of the green's functions and wave propagation modes in a stratified fluid body underlain by a layered viscoelastic soil medium. the green's functions define the solid and fluid displacements and fluid pressures due to uniform disk loads acting in either the soil or fluid media. the solution is in the frequency ...

We show that when a non-wetting fluid drains a stratified porous medium at sufficiently small capillary numbers Ca, it flows only through the coarsest stratum of the medium; by contrast, above a threshold Ca, the non-wetting fluid is also forced laterally, into part of the adjacent, finer strata. The spatial extent of this partial invasion increases with Ca. We quantitatively understand this be...