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Article Dans Une Revue Comptes Rendus. Mécanique Année : 2023

The effect of confinement on thermal convection and longitudinal macrosegregation in directionally solidified dilute succinonitrile–camphor alloy

Résumé

Directional solidification experiments were conducted in a succinonitrile–0.24 wt% camphor alloy with an emphasis on the planar front interface temperature dynamics using different sample thicknesses. The interface temperature was found to depend significantly on the thickness due to non-negligible convection effects in the thicker samples. The results were interpreted with the help of an order of magnitude analysis and a boundary layer model, which permitted estimation of the solute macrosegregation profile. The experiments and corresponding analyses performed in this work constitute an experimental characterization of convection effects as a function of sample thickness.
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hal-03929938 , version 1 (09-01-2023)

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Fatima L Mota, Luis M Fabietti, Nathalie Bergeon, Rohit Trivedi. The effect of confinement on thermal convection and longitudinal macrosegregation in directionally solidified dilute succinonitrile–camphor alloy. Comptes Rendus. Mécanique, 2023, 351 (2), ⟨10.5802/crmeca.140⟩. ⟨hal-03929938⟩
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