Modeling of growth and motion of equiaxed dendrites in a convecting melt

Karagadde, Shyamprasad and Bhattacharya, Anirban and Tomar, Gaurav and Dutta, Pradip (2011) Modeling of growth and motion of equiaxed dendrites in a convecting melt. In: 2010 3rd International Conference on Thermal Issues in Emerging Technologies Theory and Applications (ThETA), 19-22 Dec. 2010, Cairo, Egypt.

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Abstract

A numerical micro-scale model is developed to study the behavior of dendrite growth in presence of melt convection. In this method, an explicit, coupled enthalpy model is used to simulate the growth of an equiaxed dendrite, while a Volume of Fluid (VOF) method is used to track the movement of the dendrite in the convecting melt in a two-dimensional Eulerian framework. Numerical results demonstrate the effectiveness of the enthalpy model in simulating the dendritic growth involving complex shape, and the accuracy of VOF method in conserving mass and preserving the complex dendritic shape during motion. Simulations are performed in presence of uniform melt flow for both fixed and moving dendrites, and the difference in dendrite morphology is shown.

Item Type:	Conference Paper
Publisher:	IEEE
Additional Information:	Copyright 2010 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	23 Dec 2011 05:37
Last Modified:	23 Dec 2011 05:37
URI:	http://eprints.iisc.ac.in/id/eprint/42872

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