Chapter 3 - Fluid Dynamics

Many different experiments had shown, that ice-slurry behaves as a Newtonian fluid at low ice-concentrations, and non-Newtonian fluid at higher ice-concentrations. The most widley used rheological model is the Bingham fluid model

Chapter 3 - Fluid Dynamics

Many different experiments had shown, that ice-slurry behaves as a Newtonian fluid at low ice-concentrations, and non-Newtonian fluid at higher ice-concentrations. The most widley used rheological model is the Bingham fluid model

Influence of the Task on Hand Preference: Individual Differences among Gorillas (Gorilla gorilla gorilla)

International audienc

Institution of Chemical Engineers www.ingentaselect.com=titles=02638762.htm Trans IChemE, Vol 81, Part A, September 2003 EXPERIMENTAL STUDY OF A BUOYANT PARTICLE

INTRODUCTION Solid--liquid dispersions are widely encountered in many industrial processes, especially in chemical engineering (thermal energy transportation, process plant transfer pipelines, catalytic reactors, fluidized beds, etc.). Different cases may be distinguished, according to many factors such as: particle type (colloidal or not), monodisperse or polydisperse particle distributions, particle concentrations, density higher or lower than that of the carrier fluid, viscosity of the liquid, laminar or turbulent flow regime (Shook and Roco, 1991). The flow patterns associated give rise to highly heterogeneous flows for which the study is far from complete. The substantial lack of experimental data does not facilitate the elaboration of models to predict flow patterns or pressure drops. Satisfactory modelling involves correct predictions of solid--liquid (particle--fluid or wall-- fluid) and solid--solid (particle--particle or wall--particle) interactions in the flow mixture. Th

Viscosity measurements and correlations of binary mixtures: 1,1,1,2-tetrafluoroethane (HFC-134a)+tetraethylene glycol dimethylether (TEGDME)

International audienceThis paper reports viscosity data for the binary system1,1,1,2- tetrafluoroethane (HFC-134a), x1, +tetraethylene glycol dimethylether (TEGDME), 1 - x1. The measurements (200 data points) were obtained at various pressures (between 10 and 100 MPa) in the homogeneous liquid state from T = 293.15-373.15 K. The measurements have been carried out with a falling body viscometer for four molar fractions x1 = (0.28, 0.44, 0.63 and 0.88). The density values of this system were interpolated from previous results obtained at the laboratory. All of the available viscosity data, including pure HFC-134a and pure TEGDME (both previously studied at the laboratory), have been correlated using several viscosity models (mixing rules, self-refrencing model, hard-sphere theory, friction theory and free volume model). The resulting models are presented and discussed in this work