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Three-dimensional pattern and the anisotropy of growth velocity of ice crystal growing in supercooled water.

[In Japanese. / En japonais.]

Author(s) : TERAOKA Y., SAITO A., OKAWA S.

Type of article: Article

Summary

The purpose of this research was to investigate the ice growth of a single crystal in three dimensions. A three-dimensional pattern of ice-crystal growth in supercooled water was observed using the Mach-Zehnder spectro-interferometer. Temperature varied from -0.3 to -1.6 °C. It was found that the ice crystal began to grow freely as a single crystal at the tip of the capillary tube in supercooled water at this range. A sectional plane of the tip of dendrite was obtained from the results and fits half parabola very closely. The coefficient of squared term of a half parabola was found to depend on the degree of supercooling and time. The coefficient, a, of a half parabola varied in time, but at quasi steady state it was found to depend only on the degree of supercooling. The thickness of the ice crystal was measured and the growth velocity along c-axis was calculated. It was found to be independent of the degree of supercooling but dependent on time. The equation on crystal growth in c-axis was obtained experimentally.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 2004-1018
  • Languages: Japanese
  • Source: Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers - vol. 20 - n. 2
  • Publication date: 2003
  • Document available for consultation in the library of the IIR headquarters only.

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