An experimental investigation is conducted to characterize melting and heat transfer during convective melting of an ice sphere in horizontally flowing water. The shape changes of melting ice spheres with time at different velocities and supply temperatures of water and at different initial ice temperatures are recorded using a digital video camcorder. From the recorded images, the time variations of local melting rate, local heat transfer coefficient and local Nusselt number at various angular positions are obtained. The effects of water temperature and velocity on these local parameters are analyzed and the total melting rate and average heat transfer coefficient are determined. Guided by a shape factor characterizing the particle shape variation, an empirical correlation for average Nusselt number in convective melting of a solid particle is obtained. The experimental results provide important particle-level information needed to improve the accuracy of numerical models for convective melting of a single particle or packed particles.
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Technical Papers
Heat Transfer Characteristics of Melting Ice Spheres Under Forced and Mixed Convection
Y. L. Hao,
Y. L. Hao
Department of Mechanical Engineering, Florida International University, Miami, FL 33199
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Y.-X. Tao
e-mail: ytao@eng.fiu.edu
Y.-X. Tao
Department of Mechanical Engineering, Florida International University, Miami, FL 33199
Search for other works by this author on:
Y. L. Hao
Department of Mechanical Engineering, Florida International University, Miami, FL 33199
Y.-X. Tao
Department of Mechanical Engineering, Florida International University, Miami, FL 33199
e-mail: ytao@eng.fiu.edu
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division October 24, 2001; revision received April 16, 2002. Associate Editor: C. Amon.
J. Heat Transfer. Oct 2002, 124(5): 891-903 (13 pages)
Published Online: September 11, 2002
Article history
Received:
October 24, 2001
Revised:
April 16, 2002
Online:
September 11, 2002
Citation
Hao , Y. L., and Tao, Y. (September 11, 2002). "Heat Transfer Characteristics of Melting Ice Spheres Under Forced and Mixed Convection ." ASME. J. Heat Transfer. October 2002; 124(5): 891–903. https://doi.org/10.1115/1.1494090
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