A front tracking model for transient solidification of Al-7wt%Si in a Bridgman furnace

R. P. Mooney, S. McFadden, M. Rebow, D. J. Browne

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The Bridgman furnace is widely used in industry and research. This paper outlines a working one-dimensional model for tracking the columnar solidification front in a Bridgman furnace where the pulling velocity, and hence front position, change as a function of time. The front tracking model is applied to a fixed grid of control volumes using an explicit numerical finite difference scheme to solve the heat equation over a finite domain. The model is demonstrated by way of a notional scenario, namely, Bridgman furnace solidification of a 16-mm diameter rod of Al-7wt%Si. The results show how the evolution of temperature distribution, thermal history, and front position are affected by a step change in pulling velocity.

Original languageEnglish
Pages (from-to)527-530
Number of pages4
JournalTransactions of the Indian Institute of Metals
Volume65
Issue number6
DOIs
Publication statusPublished - 9 Oct 2012

Keywords

  • Al-Si
  • Bridgman furnace
  • Columnar growth
  • Front tracking
  • Velocity change

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