An experiment for measuring self-filtration in terms of change in volume fraction downstream of a constriction compared to volume fraction upstream of said constriction was designed and tested. The user has the ability to control a variety of parameters including constriction geometry, flow rate, and initial volume fraction in order to evaluate their impact on downstream volume fraction. The re...

A new and very general technique for simulating solid-fluid suspensions is described; its most important feature is that the computational cost scales linearly with the number of particles. The method combines Newtonian dynamics of the solid particles with a discretized Boltzmann equation for the fluid phase; the many-body hydrodynamic interactions are fully accounted for, both in the creeping-...

A new and very general technique for simulating solid-fluid suspensions has been described in a previous paper (Part I); the most important feature of the new method is that the computational cost scales linearly with the number of particles. In this paper (Part II), extensive numerical tests of the method are described; results are presented for creeping flows, both with and without Brownian m...

Ultrasonic compression wave propagation is sensitive to the physical state of particulate liquid suspensions – colloids and emulsions. It is possible to estimate dispersed particle size distribution (PSD) from measurements of wave attenuation and/or phase velocity as functions of frequency. It is also possible to detect and characterise dynamic phenomena such as flocculation, network formation ...

The Electric Particulate Suspension (EPS) is a combustion ignition system being developed at Iowa State University for evaluating quenching effects of powders in microgravity (quenching distance, ignition energy, flammability limits). Because of the high cloud uniformity possible and its simplicity, the EPS method has potential for ‘benchmark’ design of quenching flames that would provide NASA ...

• An efficient geometric method better calculates preferential concentration of particles. A contractivity-preserving splitting preserves the sum Lyapunov spectrum. The centrifuge effect is also mimicked in numerical solution. Non-divergence-free interpolation can erroneously cluster Matrix-valued RBFs are equivalent to via regularized Stokeslets. for simulating suspensions spherical and non-sp...

The ability to predict particle dispersion, interaction, and deposition in turbulent pipes is of value improving the transport process efficiency high concentration particulate flows. In this work, settling behavior suspensions dense particles a cylindrical pipe has been studied using direct numerical simulation coupled with Lagrangian tracking, influence Stokes number on examined. From analysi...

conclusions in conclusion, the suspension containing veegum 1%, sodium carboxy methyl cellulose 1%, glycerine 0.2%, sodium citrate 0.3% and sorbitol 20 % was chosen as the most physically stable formulation. results according to the results, glycerin (0.2%) and sodium citrate (0.3%) had the best effect on the suspension stability as wetting and flocculating agents, respectively. rheological pro...