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RESEARCH PAPERS

Heat Transfer During Melting From an Isothermal Vertical Wall

[+] Author and Article Information
C.-J. Ho, R. Viskanta

School of Mechanical Engineering, Purdue University, West Lafayette, Ind. 47907

J. Heat Transfer 106(1), 12-19 (Feb 01, 1984) (8 pages) doi:10.1115/1.3246624 History: Received January 26, 1983; Online October 20, 2009

Abstract

This paper reports basic heat transfer data during melting of n-octadecane from an isothermal vertical wall of a rectangular cavity. The shadowgraph technique was used to measure local heat transfr coefficents at the heat source surface and the solid-liquid interface motion during phase change was recorded photographically. Experimental results clearly showed that, except in the very early stages of melting, the rates of melting and of heat transfer were greatly affected by the buoyancy-driven convection in the liquid. Initial subcooling of the solid substanially impeded the phase change process. A numerical simulation of the corresponding two-dimensional melting in the presence of natural convection was performed, and the numerical predictions are compared with experimental data.

Copyright © 1984 by ASME
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