Capítulo de Libro
Modelling the interaction of particles with a concave solidifying interface
Título del libro: Modeling of Casting, Welding and Advanced Solidification Processes
Agaliotis, Eliana Mabel
; Rosenberger, Mario Roberto
; Schvezov, Carlos Enrique
; Ares, Alicia Esther
Fecha de publicación:
2009
Editorial:
The Minerals, Metals and Materials Society
ISBN:
978-0-87339-742-1
Idioma:
Inglés
Clasificación temática:
Resumen
The interaction of a foreign particle with a solidifying interface is studied with numerical modelling. The model includes two main forces; the drag and the pushing forces. The drag force is calculated from the fluid flow, the repulsion force by the Lifshitz-Van der Waal force. The thermal field is decoupled from the force field. The model is applied to a metallic matrix and particles with similar and higher thermal conductivities; giving planar and concave interface shapes respectively. The steady state of pushing is studied for the same conditions and different solidification velocities and particle radius. The results show that a concave interface shape generates higher drag forces about one order the magnitude higher than those for a planar interface. As a result the critical velocity is less than that corresponding to a planar interface. The magnitude of the effect of the different parameters in the phenomenon is presented and discussed.
Palabras clave:
SOLIDIFICATION
,
PUSHING
,
MODELING
,
CONCAVE INTERFACE
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Identificadores
Colecciones
Capítulos de libros(CCT - NORDESTE)
Capítulos de libros de CTRO.CIENTIFICO TECNOL.CONICET - NORDESTE
Capítulos de libros de CTRO.CIENTIFICO TECNOL.CONICET - NORDESTE
Citación
Agaliotis, Eliana Mabel; Rosenberger, Mario Roberto; Schvezov, Carlos Enrique; Ares, Alicia Esther; Modelling the interaction of particles with a concave solidifying interface; The Minerals, Metals and Materials Society; 12; 2009; 209-217
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