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Showing 1 to 8 of 8 for “"bubble rise velocity"”.
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Bubble Dynamics and Dense Phase Composition in 2-D Binary Gas-Solid Fluidized Bed
… (2D) fluidized bed was used to study bubble dynamics and dense phase composition distribution in order to gain some fundamental understanding of this system. Digital image analysis (DIA) was employed to measure bubble diameter, bubble rise velocity, bed expansion and particle …
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Predicting Oxygen Transfer in Hypolimnetic Oxygenation Devices
… purpose of this research was to apply a discrete-bubble model to predict the performance of several hypolimnetic oxygenators. The model is used to predict the oxygen transfer rate in a hypolimnetic oxygenator based on the initial bubble size formed at the diffuser. The discrete-bubble model is …
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The effects of low aspect ratio and heat exchanging internals on the bubble properties and flow regime in a pilot-plant bubble/slurry bubble column for Fischer-Tropsch synthesis
… that executed commercially by using the bubble/slurry bubble column reactor. The experimental results reveal that the investigated parameters, in terms the presence of internals, and reducing the aspect ratio and the solids loading, increase the local gas holdup, interfacial area, bubble …
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LARGE-EDDY SIMULATION OF DEEP-WATER HYDROCARBON PLUME DYNAMICS
… and hydration process that weakens the bubble-induced buoyancy for driving the plume. In this study, a new modeling strategy is developed to efficiently incorporate the gas dissolution and hydration effects into a fast Eulerian-Eulerian large-eddy simulation (LES) model. By …
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A Comprehensive Dynamic Model of the Column Flotation Unit Operation
… changes in the concentrations of all solid and bubble species, along the full column height. A dynamic model of a process is normally composed of a set of partial or ordinary differential equations that describe the state of the process at any given time or position inside the system volume. …
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An experimental study on the effect of viscosity on micro-bubble size distribution and rise velocity in a bubble column
… capacities. DAF systems generate microscale air bubbles to lift suspended particles in influent solution to the top of a rectangular tank and remove them by scrapers. Due to the recent focus on different applications of micro and nanoscale air bubbles across many industrial operations, …
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Intensification of Gas Absorption in a Downward Flow Microbubble Bioreactor
… at ambient pressure into a downward microbubble flow. The performance of this device exceeds known technology in terms of volumetric gas transfer energy efficiency defined as reactor divided by reactor power density (achieving values near 0.34 s<sup>-1</sup> m<sup>3</sup> kW<sup>-1</sup>) …
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Multiscale continuum simulations of fluidization : bubbles, mixing dynamics and reactor scaling
… Tracking Algorithm (MS3DATA) to detect and track bubbles using time and spatially resolved data. Our tools are employed to quantify the effect of reactor size on fluidization hydrodynamics. Under similar operating conditions, significantly larger bubbles are observed in small lab-scale beds …