NDLI: Heatline Visualization During Solidification of a Eutectic Solution in a Rectangular Cavity

Content Provider	Springer Nature Link
Author	Dhar, Mrinmoy Barman, Nilkanta Chattopadhyay, Himadri Simlandi, Sudip
Copyright Year	2015
Abstract	The present work is focused on the visualization of heatline during solidification. The investigation considers a rectangular cavity filled with eutectic aqueous ammonium chloride solution. In order to develop Rayleigh-Bennard convection in the cavity, the temperatures of the top and bottom walls are maintained below and above eutectic temperature of the solution, respectively, whereas the vertical walls are assumed to be adiabatic. The solidification process is modelled by a set of mass, momentum and energy conservation equations coupled with boundary conditions. The governing differential equations are solved using semi-implicit finite volume method according to SIMPLER algorithm with the help of line-by-line TDMA solver. The evolution of heatline pattern during solidification is presented. From the evolution of solid–liquid interface, it is found that the solidified layer undergoes remelting at the solid–liquid interface during later stages of solidification as a consequence of thermal superheat. In the present work, the cause of the remelting phenomenon during solidification is investigated in details using energy flux vectors. It is observed that convection loop pattern i.e. energy flow below the remelted interface changes at the time of remelting.
Starting Page	1187
Ending Page	1192
Page Count	6
File Format	PDF
ISSN	09722815
Journal	Transactions of the Indian Institute of Metals
Volume Number	68
Issue Number	6
e-ISSN	09751645
Language	English
Publisher	Springer India
Publisher Date	2015-10-01
Publisher Place	New Delhi
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Semisolid slurry Rheological behavior Modeling Apparent viscosity Metallic Materials Materials Science Tribology, Corrosion and Coatings
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys

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