University of Illinois Urbana-Champaign

Effects of rotation on convection in a porous layer during alloy solidification

Riahi, Daniel N.

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https://hdl.handle.net/2142/112675

Description

Title
Effects of rotation on convection in a porous layer during alloy solidification
Author(s)
Riahi, Daniel N.
Issue Date
2001-04
Keyword(s)
  • Rotating Convection
  • Porous Medium
  • Alloy Solidification
  • Coriolis Effects
  • Natural Convection
  • Rotating Fluid
Abstract
The topic of this chapter is that of effects of an external constraint of rotation on convection, driven mainly by compositional buoyancy, in a porous layer adjacent to the solid-liquid interface during directional solidification of a binary alloy. In solidification literature such a porous layer is referred to as a mushy layer. The analyses carried out by several studies in the past on the subject of this chapter and the subsequent results are reviewed first, the latest results unpublished elsewhere are presented briefly, and then in the second-half of the chapter, investigation of effects of rotation on convection in a horizontal porous layer of melt and dendrite solids is carried out subject to a simple model. The results based on this simple model indicate that Coriolis force can have stabilizing effects on both stationary and oscillatory mode of convection, while the oscillatory mode of convection experiences an additional destabilization due to the Coriolis force effect.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 968
  • 2001-6007
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/112675
Copyright and License Information
Copyright 2001 Board of Trustees of the University of Illinois

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TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.