| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Pericleous, Koulis
University of Greenwich
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (46/46 displayed)
- 2023Effect of water temperature and induced acoustic pressure on cavitation erosion behaviour of aluminium alloys
- 2023A study of the complex dynamics of dendrite solidification coupled to structural mechanicscitations
- 2023Controlling solute channel formation using magnetic fields
- 2021Enhancement of mechanical properties of pure aluminium through contactless melt sonicating treatmentcitations
- 2021In-situ observations and acoustic measurements upon fragmentation of free-floating intermetallics under ultrasonic cavitation in watercitations
- 2021On the governing fragmentation mechanism of primary intermetallics by induced cavitationcitations
- 2020Acoustic resonance for contactless ultrasonic cavitation in alloy meltscitations
- 2020Progress in the development of a contactless ultrasonic processing route for alloy grain refinementcitations
- 2020Contactless ultrasonic treatment in direct chill casting
- 2019The contactless electromagnetic sonotrodecitations
- 2019Contactless ultrasonic cavitation in alloy meltscitations
- 2019Manufacturing of a metal component or a metal matrix composite component involving contactless induction of high - frequency vibrations
- 2017Experimental and numerical investigation of acoustic pressures in different liquids
- 2016Multiple timescale modelling of particle suspensions in metal melts subjected to external forces
- 2016Modeling of convection, temperature distribution and dendritic growth in glass-fluxed nickel meltscitations
- 2015Contactless ultrasound generation in a cruciblecitations
- 2013A multiscale 3D model of the Vacuum Arc remelting processcitations
- 2012A multi-scale 3D model of the vacuum arc remelting processcitations
- 2011Numerical model of electrode induction melting for gas atomizationcitations
- 2011Multi-physics modeling in the electromagnetic levitation and melting of reactive metals
- 2011Continuous casting of titanium in the cold crucible
- 2010Magnetic levitation of large liquid volume
- 2010Magnetic levitation of a large mass of liquid metal
- 2009Vacuum arc remelting time dependent modelling
- 2009Solutions for the metal-bath interface in aluminium electrolysis cells
- 2009Effect of varying electromagnetic field on the VAR process
- 2008Vacuum arc remelting time dependent modelling
- 2008Modelling of electromagnetic levitation – consequences on non-contact physical properties measurementscitations
- 2007Pseudo-spectral solutions for fluid flow and heat transfer in electro-metallurgical applicationscitations
- 2007The study of flow and temperature fields in conducting droplets suspended in a DC/AC combination field
- 2007Liquid metal induction heating modelling for cold crucible applications
- 2006Numerical simulation of free surface behaviour of a molten liquid metal droplet with and without electromagnetic induction
- 2006Computational fluid dynamics: advancements in technology for modeling iron and steelmaking processes
- 2006Cold crucible melting of reactive metals using combined DC and AC magnetic fields
- 2006Experimental and numerical study of the cold crucible melting processcitations
- 2005Pseudo-spectral solutions for fluid flow and heat transfer in electro-metallurgical applications
- 2005Maximising heat transfer efficiency in the cold crucible induction melting process
- 2005The use of combined DC and AC fields to increase superheat in an induction skull melting furnace
- 2004Modelling induction skull melting design modificationscitations
- 2004The development and experimental validation of a numerical model of an induction skull melting furnacecitations
- 2003AC & DC magnetic levitation and semi-levitation modelling
- 2003Modelling induction skull melting design modifications
- 2003Experimental and numerical study of the cold crucible melting process
- 2001Modelling induction melting energy savings
- 2001Dynamics of magnetically suspended fluid
- 2000Modeling the dynamics of Magnetic Semilevitation Meltingcitations
Places of action
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document
Cold crucible melting of reactive metals using combined DC and AC magnetic fields
Abstract
Cold crucible furnace is widely used for melting reactive metals for high quality castings. Although the water cooled copper crucible avoids contamination, it produces a low superheat of the melt. Experimental and theoretical investigations of the process showed that the increase of the supplied power to the furnace leads to a saturation in the temperature rise of the melt, and no significant increase of the melt superheat can be obtained. The computer model of theprocess has been developed to simulate the time dependent turbulent flow, heat transfer with phase change, and AC and DC magnetohydrodynamics in a time varying liquid metal envelope. The model predicts that the supermimposition of a strong DC field on top of the normal AC field reduces the level of turbulience and stirring in the liquid metal, thereby reducing the heat loss through the base of the crucible and increasing the superheat. The direct measurements of the temperature in the commercial size cold crucbile has confirmed the computer redictions and showed that the addition of a DC field increased the superheat in molten TiAl from ~45C (AC field only) to ~81C (DC+AC fields). The present paper reports further predictions of the effect of a dDC field on top of the AC field and compares these with experimental data.