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Showing 1 to 20 of 137 for “"Solid particles"”.
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Reentrainment of Submicron Solid Particles
… on the short-term reentrainment of submicron particles. The particles tested are in the size range of 10-900 nm and are deposited by wetting the inside of capillary tubes with a liquid suspension. The tubes are then dried in a desiccator. The particles are reentrained under turbulent dry air …
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Solid particles flow through labyrinth channels in drip emitters
… time, using water highly concentrated with grit particles. Three different non-pressure compensating emitters with rated flow rate of 0.8 LPH, 1.6 LPH, and 2.0 LPH from Jain Irrigation System were studied. Eight different concentrations of grit were pumped through the system. A clogging period of …
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Preparation, type and stability of emulsions stabilised by solid particles
… and stability of emulsions stabilised solely by solid silica particles has been investigated in detail using a combination of conductivity, stability, light diffraction, optical microscopy and contact angle measurements. The wettability of the particles in situ at the oil-water interface plays a …
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Erosion of metal pipe by solid particles entrained in water
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1981.
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Studies On The Behaviour Of Solid Particles In Turbulent Gas Flows
… describes a study on the behaviour of small solid particles in a numerically simulated turbulent flow. The numerical simulation of the pseudo-turbulence was based upon a vortex method in which the velocity fluctuations of the turbulent flow were simulated by arrays of randomly positioned …
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Erosion of metal pipe by solid particles entrained in a liquid
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1980.
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Wettability of solid particles in relation to particle-stabilised foams and emulsions
Colloidal particles and surfactants are commonly used, either individually or combined, as stabilisers of emulsions and foams. While the properties of surfactants and particles under a range of conditions and concentrations are relatively well known, there are some areas that require further …
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Computational fluid dynamics modelling of multi-phase flow transition in presence of solid particles.
… contain mixtures of oil, gas and water with sand particles from sandstone reservoirs. Accurate design of oil and gas production equipment greatly depends on detailed understanding of this flow phenomena. Previously, multi-phase studies relied upon empirical correlation and mechanistic equations …
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Numerical Simulations of Interactions of Solid Particles and Deformable Gas Bubbles in Viscous Liquids
Studying the interactions of solid particles and deformable gas<br />bubbles in viscous liquids is very important in many applications,<br />especially in mining and chemical industries. These interactions<br />involve liquid-solid-air multiphase flows and an<br />arbitrary-Lagrangian-Eulerican …
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Heat transfer between a supernatant gas and a flowing vibrofluidized bed of solid particles
… flowing vibrofluidized bed of cold solid. Based on a simple heat-transfer model, an "apparent" heat-transfer coefficient between the air and solid was calculated. The temperature profile of the air as a function of heat-exchanger length was used to determine the "apparent" area for …
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Particle-stabilised foams and foam films
… and foam liquid films stabilised by colloidal solid particles, in the absence of any surface active substances, e.g. surfactants. Foams occur as end products or during the processing of products in many industries, including detergents, food and the cosmetic industries. A controlled level of …
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Mass transfer in aerated vibrated beds
A vibrated bed is a mobile layer of solid particles contained in a vessel that is vertically vibrated. When a flow of gas is maintained through it , the bed is called an aerated vibrated bed and a vibrated gas-fluidized bed if the gas stream is greater than the minimum fluidization velocity of the …
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The effect of non-biological particulates on microbial cell disruption in a slurry bioreactor
… agitated in the presence of biologically inert solid particles in the absence of aeration. Applications of biological processes, where cells and solid particles are used, include bead mills, minerals bioprocessing, soil bioremediation and immobilised biocatalysts. An understanding of the rate, …
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Numerical modeling of multiphase fluid flow through the electrolytic cell
… inside a continuous liquid phase. In time, solid particles of calcium carbonate appear on the cell's anode due to the cell operation. Thus, the fluid flow process in the cell, in general, is a three-phase process that includes turbulence. Although hydrogen bubbles and calcium carbonate …
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The Effects of Particles Momentum Transfer in Shock Wave/Boundary Layer Interaction
Numerical simulations of solid particles seeded into a supersonic flow containing an oblique shockwave reflection were performed in order to observe and understand the momentum transfer effects between solid and gas phases in shock-wave / boundary layer interaction. Particle size and mass loading …
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Formation and processing of rheocast microstructures
… superheated liquid. Rheocast slurries with 37% solid particles,were found to flow about half as far as fully liquid alloy superheated 20⁰C above the liquidus.
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A numerical framework for the direct simulation of solid-fluid systems
Our understanding of solid-fluid dynamics has been severely limited by the nonexistence of a high-fidelity modeling capability for these multiphase systems. Continuum modeling approaches overlook the microscale solid-fluid interactions from which macroscopic system properties emerge, while …
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Effect of rigid crystals on the experimental sintering of rhyolitic ash under shallow conduit conditions
… evolved similarly, from loose, cohesion-less particles to sintered particles forming a friable, agglutinated framework with an interconnected network of pores of ≥20 vol.%. All mixtures took longer to sinter and remained at a higher final porosity than crystal-free experiments performed by …
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