A Front Tracking Model for Transient Solidification of Al-7wt%Si in a Bridgman Furnace

作者：Mooney R P^*; McFadden S; Rebow M; Browne D J

来源：Transactions of the Indian Institute of Metals, 2012, 65(6): 527-530.

DOI：10.1007/s12666-012-0201-2

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

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.

• 出版日期2012-12