Abstract
This paper presents a review of recent modelling work by the author and his group devoted to a study of the solidification and melting of a weak binary alloy in a Bridgman furnace. The work has been undertaken in connection with the MEPHISTO-4 program, which is a study of the solidification and melting of an alloy of bismuth with 1 at% tin in a microgravity environment. The enthalpy method is used. The effects of thermal and solutai convection and (in some of the results presented) of the dependence of melting temperature on solute concentration are included. Two approaches are being employed. In the first, the primitive variable equations are solved by a finite volume discretization, using a commercial flow code CFX 4.1. In the second, a finite difference/finite volume discretization of the vorticity-stream function formulation of the equations is solved by an in-house code SOLCON (from SOLidification and CONvection). Validation of the codes has been obtained by a comparison of CFX calculations with an experiment in earth gravity using the material succinonitrile, and by comparison of SOLCON with CFX.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
