Freezing of water drops on a cold surface
Autor: | David J. Hargreaves, M. E. R. Walford, S. Stuart-Smith, M. Lowson |
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Rok vydání: | 1991 |
Předmět: | |
Zdroj: | Journal of Glaciology. 37:47-50 |
ISSN: | 1727-5652 0022-1430 |
DOI: | 10.1017/s0022143000042787 |
Popis: | A drop of water falling gently on to a cold copper surface freezes to it, forming a curious minaret-shaped pellet of ice. The shear tractive force necessary then to remove the ice pellet depends on the initial temperature of the metal: it is a maximum at −22°C and falls to zero at −62°C. At impact velocities greater than approximately 0.8 ms−1, depending on the metal temperature, the droplets of water freeze to form irregular pancakes or discs of ice which adhere to the metal weakly if at all. |
Databáze: | OpenAIRE |
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