Finite element simulations of thermosolutal convection in vertical solidification of binary alloysDendritic vertical solidification of a binary alloy is modeled using the finite element method to assess the effect of thermosolutal convection in macrosegregation. The mathematical model assumes steady-state solidification with a planar, undeformable surface defined by the dendrite tips and the eutectic isotherm. The dendritic region is assumed to advance at a constant solidification velocity v. The stability of the modeled system has been investigated and nonlinear calculations performed that show finger-like convection when the system is unstable. Results for lead-tin alloys show that when the system is unstable, convection is only significant in the uppermost part of the mush and is entirely driven by convection in the bulk fluid.
Document ID
19900031237
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Heinrich, J. C. (Arizona Univ. Tucson, AZ, United States)
Felicelli, S. (Arizona, University Tucson, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Materials Processing
Meeting Information
Meeting: International Conference on Finite Element Methods in Flow Problems