A 2D Multiphase Model of Drop Behavior during Electroslag Remelting
Electroslag remelting is a process extensively used to produce metallic ingots with high quality standards. During the remelting operation, liquid metal droplets fall from the electrode through the liquid slag before entering the liquid pool of the secondary ingot. To better understand the process a...
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Published in: | Metals (Basel ) Vol. 10; no. 4; p. 490 |
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Abstract | Electroslag remelting is a process extensively used to produce metallic ingots with high quality standards. During the remelting operation, liquid metal droplets fall from the electrode through the liquid slag before entering the liquid pool of the secondary ingot. To better understand the process and help to optimize the operating condition choice, a 2D axisymmetric multiphase model of the slag domain has been developed using a two fluid Eulerian approach. During their fall, droplets hydrodynamic interactions are calculated thanks to an appropriate drag law. Influence of droplets on the electromagnetic field and on the slag hydrodynamics is discussed, as well as their heat exchange with the slag. Even with a small volume fraction, the droplets influence is noticeable. The present investigation shows that small droplets have a large influence on the slag hydrodynamics, due to a great momentum exchange. However heat transfer is more influenced by large drops, which are found to be relatively far from the thermal equilibrium with the slag phase. |
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AbstractList | Electroslag remelting is a process extensively used to produce metallic ingots with high quality standards. During the remelting operation, liquid metal droplets fall from the electrode through the liquid slag before entering the liquid pool of the secondary ingot. To better understand the process and help to optimize the operating condition choice, a 2D axisymmetric multiphase model of the slag domain has been developed using a two fluid Eulerian approach. During their fall, droplets hydrodynamic interactions are calculated thanks to an appropriate drag law. Influence of droplets on the electromagnetic field and on the slag hydrodynamics is discussed, as well as their heat exchange with the slag. Even with a small volume fraction, the droplets influence is noticeable. The present investigation shows that small droplets have a large influence on the slag hydrodynamics, due to a great momentum exchange. However heat transfer is more influenced by large drops, which are found to be relatively far from the thermal equilibrium with the slag phase. |
Author | Charmond, Sylvain Jardy, Alain Dussoubs, Bernard Hans, Stéphane Chaulet, Jérémy Ludwig, Andreas Wu, Menghuai Kharicha, Abdellah |
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Cites_doi | 10.1007/BF02672532 10.1007/s11663-008-9208-9 10.2355/isijinternational.55.1408 10.2298/TSCI141117070L 10.1016/j.applthermaleng.2015.08.013 10.2355/isijinternational.ISIJINT-2017-084 10.1007/s11663-015-0546-0 10.1016/j.ijmultiphaseflow.2007.08.010 10.1002/aic.690010106 10.1007/BF02657651 10.1007/BF02676888 10.1063/1.1740149 10.1016/j.applthermaleng.2014.12.075 10.1002/adem.201500391 10.1007/978-3-319-48102-9_7 10.1002/9781118495285.ch84 10.1080/10407788908944725 10.1007/s11663-016-0694-x 10.1016/j.ijheatmasstransfer.2019.02.080 10.1007/978-3-319-48102-9_2 10.2355/tetsutohagane1955.63.13_2141 10.1016/j.msea.2005.08.212 10.1002/9781118662199.ch4 |
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Keywords | magnetohydrodynamic droplet eulerian model electroslag remelting |
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Snippet | Electroslag remelting is a process extensively used to produce metallic ingots with high quality standards. During the remelting operation, liquid metal... |
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SubjectTerms | Casting Computational fluid dynamics Conductivity droplet Droplets Electric currents Electrodes Electromagnetic fields Electroslag melting Electroslag remelting Engineering Sciences eulerian model Fluid flow Fluid mechanics Heat exchange Heat transfer Hydrodynamics Ingots Liquid metals Magnetic fields magnetohydrodynamic Materials Melting Multiphase Quality Quality standards Reynolds number Slag Solidification Two dimensional models |
Title | A 2D Multiphase Model of Drop Behavior during Electroslag Remelting |
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