The effect of turbulence on solidification of a binary metal alloy with electromagnetic stirring

Journal Article · Tue Aug 01 00:00:00 EDT 1995 · Journal of Heat Transfer

DOI:https://doi.org/10.1115/1.2822635· OSTI ID:478476

Prescott, P J ^[1]; Incropera, F P ^[2]

---

1. Pennsylvania State Univ., University Park, PA (United States)
2. Purdue Univ., West Lafayette, IN (United States)

Electromagnetic induction is considered as a means of altering convection during the solidification of a Pb - 19 wt pct Sn alloy. Application of a time-varying magnet field induces Lorentz forces, which augment thermal buoyancy forces in the melt and oppose solutal buoyancy forces in the mushy zone. A continuum model for binary solid-liquid phase change is extended to account for turbulence, and laminar are turbulent flow predictions are contrasted. Results indicate that turbulence decrease the propensity for channel development and macrosegregation by enhancing mixing and reducing the effective Lewis number from 8600 to near unity. 17 refs., 8 figs.

• Sponsoring Organization: USDOE
• DOE Contract Number: FG02-87ER13759
• OSTI ID: 478476
• Journal Information: Journal of Heat Transfer, Journal Name: Journal of Heat Transfer Journal Issue: 3 Vol. 117; ISSN 0022-1481; ISSN JHTRAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
66 PHYSICS
BINARY ALLOY SYSTEMS
CONVECTION
MAGNETIC FIELDS
SOLIDIFICATION
TURBULENT FLOW