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On the effect of natural convection on solute segregation in the horizontal Bridgman configuration: Convergence of a theoretical model with numerical and experimental data

Kaddeche, Slim and Garandet, Jean-Paul and Henry, Daniel and Ben Hadid, Hamda and Mojtabi, Abdelkader On the effect of natural convection on solute segregation in the horizontal Bridgman configuration: Convergence of a theoretical model with numerical and experimental data. (2015) Journal of Crystal Growth, vol. 409. pp. 89-94. ISSN 0022-0248

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Official URL: http://dx.doi.org/10.1016/j.jcrysgro.2014.10.009

Abstract

The effect of natural convection on solute segregation in the horizontal Bridgman configuration is studied. The objective is to check whether a single non-dimensional number, based on the fluid flow induced interface shear stress, is able to capture the physics of the mass transport phenomena. A number of heat and mass transfer numerical simulations are carried out in the laminar convection regime, and the segregation results are found to be in good agreement with the predictions oldie scaling analysis. At the higher convective levels relevant for the comparison with existing experimental data, a direct computation of the segregation phenomena is not possible, but numerical simulations accounting for turbulence modeling can provide the interface shear stress. With this procedure, a good agreement between the experimentally measured segregation and the predictions of the scaling analysis is again observed, thus validating the choice of the interface shear stress as a key parameter for the segregation studies

Item Type:Article
Additional Information:Thanks to Elsevier. The definitive version of this document is available at: http://dx.doi.org/10.1016/j.jcrysgro.2014.10.009. This author's post-print version is licensed under a Creative Commons Attribution Non-Commercial No Derivatives License.
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Institut National des Sciences Appliquées de Lyon - INSA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Université Claude Bernard-Lyon I - UCBL (FRANCE)
Other partners > Ecole Centrale de Lyon (FRANCE)
Other partners > Université de Carthage (TUNISIA)
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Deposited By: Abdelkader MOJTABI
Deposited On:06 Feb 2017 09:36

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