INVESTIGADORES
AGALIOTIS Eliana Mabel
congresos y reuniones científicas
Título:
NUMERICAL MODELING OF THE INTERACTION BETWEEN A FOREIGN PARTICLE AN SOLIDIFYING CRYSTALLINE INTERFACE
Autor/es:
AGALIOTIS ELIANA M.; ROSENBERGER MARIO R.; ALICIA E. ARES; SCHVEZOV CARLOS E.
Lugar:
Orlando
Reunión:
Congreso; 2012 TMS Annual Meeting & Exhibition; 2012
Institución organizadora:
TMS
Resumen:
The interaction between a solidification front and a spherical particle was modeled and simulatedin order to study the phenomenon of "pushing". Finite element methods were employed in axisymetricdomains. The drag force is calculated from the calculated fluid flow field and therepulsion force is the Lifshitz-Van der Waal force. The thermal field is decoupled from the forcefield. The model is applied to a metallic matrix containing particles with similar, lower or higherthermal conductivities than the matrix, resulting in planar, convex and concave interface shapes,respectively.The results show that the critical velocities for pushing for concave and convex interfaces areabout one order of magnitude larger and one order of magnitude lower than the critical velocityfor flat interfaces, respectively. The simulated results were in very good agreement with reportedexperimental results.
