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NUMERICAL STUDY OF A PURE METAL MELTING IN PRESENCE OF TURBULENT NATURAL CONVECTION

NUMERICAL STUDY OF A PURE METAL MELTING IN PRESENCE OF TURBULENT NATURAL CONVECTION Melting of pure metal in presence of turbulent natural convection with Rayleigh number ranging from 106 to 109 has been studied numerically. The governing equations are formulated in terms of stream functionvorticitytemperature and the moving distorted solidliquid interface is tracked using bodyfitted coordinates. The turbulent flow is taken into account using an algebraic eddyviscosity model with Prandtl's mixing length. Results indicate that turbulent natural convection plays a more significant role than laminar flow in the process of melting. Heat transfer and melting rates are significantly increased and a correlation for the average Nusselt number at the heated wall in the quasisteady melting regime is proposed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Numerical Methods for Heat and Fluid Flow Emerald Publishing

NUMERICAL STUDY OF A PURE METAL MELTING IN PRESENCE OF TURBULENT NATURAL CONVECTION

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References (8)

Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0961-5539
DOI
10.1108/eb017492
Publisher site
See Article on Publisher Site

Abstract

Melting of pure metal in presence of turbulent natural convection with Rayleigh number ranging from 106 to 109 has been studied numerically. The governing equations are formulated in terms of stream functionvorticitytemperature and the moving distorted solidliquid interface is tracked using bodyfitted coordinates. The turbulent flow is taken into account using an algebraic eddyviscosity model with Prandtl's mixing length. Results indicate that turbulent natural convection plays a more significant role than laminar flow in the process of melting. Heat transfer and melting rates are significantly increased and a correlation for the average Nusselt number at the heated wall in the quasisteady melting regime is proposed.

Journal

International Journal of Numerical Methods for Heat and Fluid FlowEmerald Publishing

Published: Mar 1, 1992

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