INFLUENCE OF ELECTROMAGNETIC STIRRING ON THE SOLIDIFICATION OF A BINARY METAL ALLOY
| Autor: | D. R. Gaskell, P. J. Prescott, Frank P. Incropera |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Convection
Materials science Buoyancy Mixing (process engineering) Thermodynamics Recalescence Mechanics engineering.material Temperature measurement Electromagnetic induction Magnetic field Physics::Fluid Dynamics symbols.namesake Control and Systems Engineering symbols engineering Electrical and Electronic Engineering Instrumentation Lorentz force |
| Zdroj: | Experimental Heat Transfer. 9:105-131 |
| ISSN: | 1521-0480 0891-6152 |
| DOI: | 10.1080/08916159608946517 |
| Popis: | Electromagnetic induction is considered as a means of altering convection during the solidification of a Pb-19wt% Sn alloy in a vertical annular mold. While thermal buoyancy forces are opposed by solutal buoyancy forces during solidification, they can be either augmented or opposed by Lorentz forces induced with an axisymmetric linear motor. Experiments were performed to investigate the effects of direction and strength of a traveling magnetic field on convection and macrosegregation during solidification. Conditions for which Lorentz and buoyancy forces are of the same order of magnitude are considered, and results are compared to those obtained from experiments without stirring. Temperature measurements reveal that electromagnetic stirring significantly enhances mixing in the melt, thereby reducing temperature gradients and the time period associated with recalescence. Stirring direction is found to affect the vertical temperature distribution and the location of initial solidification, as well... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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