Please use this identifier to cite or link to this item:
https://hdl.handle.net/11681/5720
Title: | Thermal instability in a layer of water formed by melting ice from below |
Authors: | Yen, Yin-Chao |
Keywords: | Heat transfer Heat transmission Heat convection Conduction Convection Ice Melting Thawing Meltwater Water |
Publisher: | Cold Regions Research and Engineering Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
Series/Report no.: | Research report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 263. |
Description: | Research Report Abstract: The transition in the mode of heat transfer from conduction to convection in a layer of water formed continuously by melting ice from below has been determined experimentally. This was accomplished by locating the inflection point on the curve relating the water-ice interface (or melting front) and time. Thus, the critical Rayleigh number, 𝖱𝖺𝖼, at which convective heat transfer started can be correlated empirically as a function of warm plate temperature, 𝖳𝗌, by 𝖱𝖺𝖼 = 14,200 exp(-6.64 x 10^-2 𝖳𝗌). This relation is valid for 𝖳𝗌 varying from 7.72 to 25.50°C. The initial ice temperature 𝖳𝟢 was varied from -4.8 to -22.00°C. The effect of 𝖳𝟢 was found to be insignificant. Homogeneous, bubble-free ice was prepared and used in all the experiments. |
Rights: | Approved for public release; distribution is unlimited. |
URI: | http://hdl.handle.net/11681/5720 |
Appears in Collections: | Research Report |
Files in This Item:
File | Description | Size | Format | |
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CRREL-Research-Report-263.pdf | 4.94 MB | Adobe PDF | View/Open |