Search results for "Liquid metals"

showing 5 items of 5 documents

Space Thermoacoustic Radioisotopic Power System, SpaceTRIPS: The Magnetohydrodynamic Generator

2021

Electricity production is a major problem for deep space exploration. The possibility of using radioisotope elements with a very long life as an energy source was investigated in the framework of an EU project “SpaceTRIPS”. For this, a two-stage system was tested, the first in which thermal energy is converted into mechanical energy by means of a thermoacoustic process, and the second where mechanical energy is converted into electrical energy by means of a magnetohydrodynamic generator (MHD). The aim of the present study is to develop an analytical model of the MHD generator. A one-dimensional model is developed and presented that allows us to evaluate the behavior of the device as regards…

Environmental effects of industries and plantsRenewable Energy Sustainability and the EnvironmentMHDGeography Planning and Developmentenergy convertersthermoacousticsTJ807-830Management Monitoring Policy and Lawmagnetohydrodynamics; MHD; liquid metals; thermoacoustics; energy converters; deep space flightsTD194-195Renewable energy sourcesEnvironmental sciencesdeep space flightsGE1-350magnetohydrodynamicsliquid metalsSustainability
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Particle transport in recirculated liquid metal flows

2008

PurposeAims to present recent activities in numerical modeling of turbulent transport processes in induction crucible furnace.Design/methodology/approach3D large eddy simulation (LES) method was applied for fluid flow modeling in a cylindrical container and transport of 30,000 particles was investigated with Lagrangian approach.FindingsParticle accumulation near the side crucible boundary is determined mainly by the ρp/ρ ratio and according to the presented results. Particle settling velocity is of the same order as characteristic melt flow velocity. Particle concentration homogenization time depends on the internal flow regime. Separate particle tracks introduce very intensive mass exchang…

Liquid metalMaterials scienceFurnacesDewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und MaschinenbauMechanical engineeringHomogenization (chemistry)ModellingPhysics::Fluid DynamicsSettlingRecirculated liquid metal flowsFluid dynamicsddc:510Electrical and Electronic EngineeringCrucible furnacesMelt flow indexTurbulent transport processesInternal flowTurbulenceApplied MathematicsLarge eddy simulationParticle physicsMechanicsComputer simulationDewey Decimal Classification::500 | Naturwissenschaften::510 | MathematikComputer Science ApplicationsComputational Theory and Mathematicsddc:620SimulationLiquid metalsNumerical analysisParticles (particulate matter)Large eddy simulationCOMPEL - The international journal for computation and mathematics in electrical and electronic engineering
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Numerical and experimental study of liquid metal stirring by rotating permanent magnets

2018

In this work, we study liquid gallium stirring by rotating permanent magnets. We demonstrate possibility of easily creating different flow patterns by rotating permanent magnets, which can be industrially important for controlling heat and mass transfer processes in the system. Unlike the typical approach of simulating magnet rotation as a transient problem and time-averaging the Lorentz forces, we solve the magnet rotation as a harmonic (frequency domain) problem, which leads to forces equal to time-averaged ones and decreases the simulation time considerably. Numerical results are validated using qualitative flow structure results from the neutron radiography visualization of tracer parti…

Liquid metalMaterials sciencePermanent magnetsNumerical modelsUltrasonic Doppler velocimeters02 engineering and technologyQuantitative dataRotationHeat and mass transfer process020501 mining & metallurgyPhysics::Fluid DynamicsMagnetohydrodynamicssymbols.namesakeFrequency domainsneutron radiographyLiquid metal stirringTransient problemsFrequency domain analysisddc:530Mass transferUDVMagnetic materialsMetal meltingNumerical and experimental studyData visualizationnumerical modellingMechanicsVelocimetry0205 materials engineeringFrequency domainMagnetNumerical resultsHarmonicsymbolsUltrasound Doppler velocimetryDewey Decimal Classification::500 | Naturwissenschaften::530 | PhysikTransient (oscillation)Lorentz forceLiquid metalsIOP Conference Series: Materials Science and Engineering
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Colloids as model systems for liquid undercooled metals

2009

Physical review / E 79(1), 4 (2009). doi:10.1103/PhysRevE.79.010501

Materials scienceCondensed matter physicsScatteringIsotropyYukawa potentialLennard-Jones potentialX-ray scatteringNeutron scattering530Small-angle neutron scatteringCondensed Matter::Soft Condensed MatterShear (sheet metal)Colloidneutron diffractioncolloidsChemical physicsddc:530Structure factorliquid metalsPhysical Review E
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ELEKTROMAGNĒTISKI IETEKMĒTU HIDRODINAMISKO PROCESU EKSPERIMENTĀLI PĒTĪJUMI ŠĶIDRU METĀLU NOSLĒGTOS TILPUMOS

2014

Elektroniskā versija nesatur pielikumus

augstfrekvences magnētiskais lauksFizika materiālzinātne matemātika un statistikaŠķidrumu un gāzu mehānikamagnetic fieldfluid dynamicshigh frequencyšķidri metāliFizika astronomija un mehānikathermoelectricityMagnetohydrodynamicstermokapilārā konvekcijaMagnetohidrodinamikathermocapillary convectiontermoelektrībaFizikaliquid metals
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