Gravity waves were generated at the interface between miscible fluids, or at the top of a settling suspension or a fluidized bed. For these three systems the dispersion relation was measured and compared to the theory and calculated between two buoyant viscous fluids without surface tension. The experimental findings are found to be in good agreement with theory when effective viscosity and vol...

(1) non-irritating to the lungs and productive of no general reaction, (2) miscible with bronchial secretions, (3) quickly and easily eliminated from the lungs, (4) capable of filling or outlining even the smaller bronchi without filling the alveoli, (5) capable of maintaining the filling until x-ray films can be exposed, (6) capable of giving good contrast roentgenogram, (‘7) easy to administe...

The miscible displacement of a shear-thinning fluid by another of same rheological properties is studied experimentally in a transparent fracture by an optical technique imaging relative concentration distributions. The fracture walls have complementary self-affine geometries and are shifted laterally in the direction perpendicular to the mean flow velocity U : the flow field is strongly channe...

Jiro Kumaki,1 Takeji Hashimoto,1,2 and Steve Granick3 1Hashimoto Polymer Phasing Project, ERATO, JRDC, Keihanna Plaza, Seika, Kyoto 619-02, Japan 2Division of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 606-01, Japan 3Department of Materials Science and Engineering, University of Illinois, Urbana, Illinois 61801 (Received 27 February 1996) Phase separation occurre...

We show that molecular-dynamics simulations can furnish useful boundary conditions at a solid surface bounding a two-component fluid. In contrast to some previous reports, convective-diffusive flow is consistent with continuum equations down to atomic scales. However, concentration gradients can produce flow without viscous dissipation that is inconsistent with the commonly used Navier slip con...

We show that a liquid mixture in the thermodynamically stable homogeneous phase can undergo a phaseseparation transition when rotated at sufficiently high frequency ω. This phase-transition is different from the usual case where two liquids are immiscible or where the slow sedimentation process of one component (e.g. a polymer) is accelerated due to centrifugation. For a binary mixture, the mai...

Core flooding experiments were conducted with the objective of evaluating near miscible surfactant alternating CO2 injection and the effect of surfactant concentrations on gas-oil and water displacements in porous media. The core samples were provided from a low permeability mixed wet oil reservoir at 156 °F and 1900 psia. In addition, very few studies of surfactant adsorption on car...