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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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Duval, Hervé
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2019Mechanisms of pore formation in hydrogel scaffolds textured by freeze-dryingcitations
- 2019Mechanisms of pore formation in hydrogel scaffolds textured by freeze-dryingcitations
- 2014Numerical simulation of liquid metal infiltration and solidification inside a capillary tube
- 2012Dewetting of Low-Viscosity Films at Solid/Liquid Interfacescitations
- 2003Mathematical modelling of the plasma arc behaviour in the vacuum arc remelting process
- 2002Modelling of plasma generation and expansion in a vacuum arc: application to the vacuum arc remelting processcitations
- 2001Evaporation of Fe and Cr from Induction-stirred Austenitic Stainless Steel. Influence of the Inert Gas Pressure.citations
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conferencepaper
Numerical simulation of liquid metal infiltration and solidification inside a capillary tube
Abstract
International audience ; A metal foam is a porous structure whose solid matrix has a large fraction of interconnected cells. The objective of our study is to define a new manufacturing process via casting that produces homogenous open cell metal foams. This comes down to studying the infiltration and solidification process of a liquid metal inside a porous mould. The metal foams are characterized by their high porosity and permeability values; thus, the size of the mould pore is small enough to be considered as a capillary tube. Therefore, the focus of this paper is on modelling and numerical simulation at a local scale of the infiltration and solidification of liquid metal inside a capillary tube.The main difficulty lies in the presence of 4 phases; mould, air, liquid and solid metal: a one-domain approach is chosen in the modelling of the problem. We subsequently obtained one set of equations as a function of two volumetric fractions: the metal/air fraction in the pore and the liquid fraction in the metal. Before the solidification starts, the liquid metal infiltrates the capillary thus the liquid metal-gas interface must be tracked. This is done implicitly using the VOF (Volume Of Fluid) method, where the advection equation of the volumetric metal fraction is coupled to the Navier-Stokes equation. The solidification process of the liquid metal is accounted for using the enthalpy-porosity approach. In addition, to ensure a zero velocity field in the mould and in the solid metal, two penalty coefficients as a function of the phase indicators were added to the momentum equation.The above mathematical model is implemented in a CFD tool: OpenFOAM. A numerical validation is performed by comparing the numerical results with well-known solutions of test cases. Then, the numerical results of the liquid aluminium solidification are compared to the fluidity tests carried out experimentally. Subsequently, a numerical parametrical study enabled us to find the relationships between the distance flowed by the liquid before ...