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Showing 1 to 12 of 12 for “"rising bubble"”.
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Minimum miscibility pressure as a function of temperature and gas composition using the rising bubble apparatus
Includes bibliographical references (pages 145-151).
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Effects of Flow Rate and Droplet Size on Double Emulsion Morphology
… and morphology of three fluids, an air bubble and oil droplet in water. The experimental results have been compared to a morphology diagram based on the spreading factors that depend on the interfacial tension between two fluids. The possible morphologies are complete engulfment, partial …
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Molecular fundamentals of foam fractionation
… activities. The process is based on forming bubbles in a certain mixed solution followed by detachment and rising of bubbles through a certain volume of this solution, and consequently on the formation of a foam layer on top of the solution column. Therefore, systematic analysis of this whole …
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Assessment strategies for mixing in very viscous gas-liquid two-phase flows
… products of natural gas combustion are bubbled through the three phase recirculating tank reactor. The turbulence generated by the rising bubble column causes rapid heating and mixing of the charge resulting in fast melting and homogeneous composition of the product. Detailed …
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Computational studies of viscoelastic multiphase flows
… c, in determining deformation of drops and bubbles, are also analyzed. The numerical code permits us to vary Ca, De and c independently, which is difficult to achieve experimentally. This capability is used to isolate the roles of these parameters on the nature of viscoelastic stress near …
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Simulation of two-phase dynamics using lattice boltzmann method (LBM)
… Poiseuille-Couette flow, specifying static bubbles/droplets in a periodic domain, two-bubble or two-drop coalescence, single rising bubble, break-up of a drop/bubble due to shearing walls, specifying different equilibrium contact angles on the surfaces, dynamics of drop/bubble in contact …
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Investigation of Multiphase Reactor Hydrodynamics Using Magnetic Resonance Imaging
… bed, and the gas and solid phases of an isolated bubble in a fluidised bed. The experimental vessels were: 52 mm in diameter using 5 mm glass spheres in the upflow bed at 8 bara, 27 mm with 5 mm glass spheres in the trickle bed at 6.75 bara, and 52 mm using 1.2 mm poppy seeds as the fluidised …
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Qualitative and Quantitative Technical Criteria for Determining the Minimum Miscibility Pressures from Four Experimental Methods
… i.e., the slim-tube tests, coreflood tests, rising-bubble apparatus (RBA), and vanishing interfacial tension (VIT) technique. First, five slim-tube tests with the live light crude oilCO2 system and five coreflood tests with the dead light crude oilCO2 system are conducted at different …
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A Parallel Boundary Conforming Method on Adaptive Moving Meshes for Multiphase Flows
… past a circular cylinder, an oscillating drop/bubble and a rising bubble are used to examine the accuracy of the parallel flow solver on both fixed and moving meshes. The parallel performance of the adaptive moving mesh method, flow solver and flow solver on adaptive moving meshes is …
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Ternary Flow Simulation Based on The Conservative Phase Field Lattice Boltzmann Method
… used this method to study the interaction of rising bubbles with a static oil droplet as well as the engulfment of the water droplet on solids coated with a layer of oil.</p> <p>The accuracy of the LBM implementation of IMEXLBM was validated with simulations on both CPUs and GPUs of the 3D …
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Experimental investigation of sodium surfactin as potential methane-water hydrate formation inhibitor
… compatibility continue to be an issue arising from the use of these chemical surfactants. More so, chemical surfactants are being used as hydrate formation inhibitors. This is because, the effect of pipe plugging (due to hydrate formation) could be devastating as it may lead to the …
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Numerical Simulations of Interactions of Solid Particles and Deformable Gas Bubbles in Viscous Liquids
… 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 (ALE) approach is used …