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Direct Simulation of a Solidification Benchmark Experiment
Abstract : A solidification benchmark experiment is simulated using a three-dimensional cellular automaton-finite element solidification model. The experiment consists of a rectangular cavity containing a Sn-3 wt pct Pb alloy. The alloy is first melted and then solidified in the cavity. A dense array of thermocouples permits monitoring of temperatures in the cavity and in the heat exchangers surrounding the cavity. After solidification, the grain structure is revealed by metallography. X-ray radiography and inductively coupled plasma spectrometry are also conducted to access a distribution map of Pb, or macrosegregation map. The solidification model consists of solutions for heat, solute mass, and momentum conservations using the finite element method. It is coupled with a description of the development of grain structure using the cellular automaton method. A careful and direct comparison with experimental results is possible thanks to boundary conditions deduced from the temperature measurements, as well as a careful choice of the values of the material properties for simulation. Results show that the temperature maps and the macrosegregation map can only be approached with a three-dimensional simulation that includes the description of the grain structure.
Keywords :
Solidification Benchmark
Simulation
Littérature citée [34 références]
https://hal-mines-paristech.archives-ouvertes.fr/hal-00747567
Contributeur : Magalie Prudon <>
Soumis le : vendredi 25 avril 2014 - 10:43:10
Dernière modification le : jeudi 24 septembre 2020 - 17:22:54
Archivage à long terme le : : vendredi 31 mars 2017 - 15:25:35
Contributeur : Magalie Prudon <>
Soumis le : vendredi 25 avril 2014 - 10:43:10
Dernière modification le : jeudi 24 septembre 2020 - 17:22:54
Archivage à long terme le : : vendredi 31 mars 2017 - 15:25:35
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Carozzani-et-al-MMTA2013.pdf
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