Search results for "Bubble flow"

showing 4 items of 4 documents

Argon bubble flow in liquid gallium in external magnetic field

2020

ArgonMaterials sciencechemistryMechanics of MaterialsMechanical EngineeringBubble flowchemistry.chemical_elementElectrical and Electronic EngineeringLiquid galliumAtomic physicsCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsMagnetic fieldInternational Journal of Applied Electromagnetics and Mechanics
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Resolving gas bubbles ascending in liquid metal from low-SNR neutron radiography images

2021

We demonstrate a new image processing methodology for resolving gas bubbles travelling through liquid metal from dynamic neutron radiography images with an intrinsically low signal-to-noise ratio. Image pre-processing, denoising and bubble segmentation are described in detail, with practical recommendations. Experimental validation is presented—stationary and moving reference bodies with neutron-transparent cavities are radiographed with imaging conditions representative of the cases with bubbles in liquid metal. The new methods are applied to our experimental data from previous and recent imaging campaigns, and the performance of the methods proposed in this paper is compared against our p…

FOS: Computer and information sciencesLiquid metalTechnologyMaterials scienceQH301-705.5low signal-to-noise ratio (SNR)BubbleAcousticsNoise reductionQC1-999Computer Vision and Pattern Recognition (cs.CV)dynamic neutron imagingComputer Science - Computer Vision and Pattern Recognitionmetohydrodynamics (MHD)FOS: Physical sciencesImage processingdenoisingGeneral Materials ScienceSegmentationBiology (General)InstrumentationQD1-999Fluid Flow and Transfer ProcessesProcess Chemistry and TechnologyNeutron imagingTPhysicssegmentationGeneral EngineeringFluid Dynamics (physics.flu-dyn)Experimental dataPhysics - Fluid DynamicsEngineering (General). Civil engineering (General)Computer Science Applicationsimage processingtwo-phase flowChemistryliquid metalComputer Science::Computer Vision and Pattern RecognitionTwo-phase flowTA1-2040bubble flow
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Phase boundary dynamics of bubble flow in a thick liquid metal layer under an applied magnetic field

2020

Dynamic neutron radiography is used to observe the effect of a transverse magnetic field on argon bubbles rising through a thick layer of liquid gallium without interactions with the container walls.

Fluid Flow and Transfer ProcessesLiquid metalPhase boundaryMaterials scienceArgonCondensed matter physicsPhysics::Instrumentation and DetectorsNeutron imagingDynamics (mechanics)Computational Mechanicschemistry.chemical_elementMagnetic fieldPhysics::Fluid DynamicschemistryModeling and SimulationBubble flowNuclear ExperimentLayer (electronics)Physical Review Fluids
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Spatial dispersion intensity measure of phase concentration distributions and its applications to quantitative characterization, distinguishing and c…

2008

A method of evaluation of spatial dispersion of structures is presented. A quantitative parameter measuring spatial dispersion is introduced. It is shown that this parameter indeed measures spatial dispersion. A classification of bubble flow structures based on values of this parameter is proposed. An example of application of the method to real flow structures is presented.

business.industryProcess Chemistry and TechnologyGeneral Chemical EngineeringBubblePhase (waves)Energy Engineering and Power TechnologyGeneral ChemistryMeasure (mathematics)Industrial and Manufacturing EngineeringCharacterization (materials science)Physics::Fluid DynamicsOpticsFlow (mathematics)Spatial dispersionBubble flowStatistical physicsbusinessIntensity (heat transfer)MathematicsChemical Engineering and Processing: Process Intensification
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