ライブラリ登録: Guest

ISSN Online: 2377-424X

International Heat Transfer Conference 3
August, 7-12, 1966, Chicago, USA

AN EXPERIMENTAL STUDY OF A MELTING PROBLEM WITH NATURAL CONVECTION

Get access (open in a dialog) DOI: 10.1615/IHTC3.290
pages 159-166

要約

An experimental technique has been successfully developed to study the effect of natural convection (thermal instability) on the melting rate of ice. Reproducible results were obtained by using homogeneous, bubble-free ice samples for the melting process. The problem of volume change due to phase transition or separation of the ice-water interface encountered when melting from below was solved by continuously adding water at the same temperature as the constant temperature bath which supplied heat for melting. Under certain temperature conditions irregularities in the interface, a result of convective motion, became very apparent and could be observed by visual means.
By periodically measuring the amount of water added and varying the initial temperature of the ice sample To and that of the heat source Ts extensive results were obtained demonstrating the effects of these temperatures on the melting rates which could be expressed in terms of the dimensionless parameters and defined RΔT = (Ts - Tm)/ (Tm - To) and Φ= L/cp2(Tm - To). The results from this experimental investigation are compared with those obtained from an analytical solution of the same problem.