A Theoretical Study of the Collision Efficiency of Small Planar Ice Crystals Colliding with Large Supercooled Water Drops

1985 ◽  
Vol 42 (8) ◽  
pp. 857-862 ◽  
Author(s):  
Jeferey K. Lew ◽  
David E. Kingsmill ◽  
Derek C. Montague
Keyword(s):  
Theoretical Study ◽  
Supercooled Water ◽  
Ice Crystals ◽  
Collision Efficiency ◽  
Water Drops

scholarly journals Growth Modes of Ice Crystals in Supercooled Water and Aqueous Solutions

1967 ◽  
Vol 6 (47) ◽  
pp. 651-662 ◽  
Author(s):  
H. R. Pruppacher
Keyword(s):  
Aqueous Solutions ◽  
Tube Wall ◽  
Pure Water ◽  
Supercooled Water ◽  
Seed Crystal ◽  
Ice Crystals ◽  
Tube Axis ◽  
Growth Modes ◽  
Water Drops ◽  
Large Water

The growth modes of ice crystals in supercooled water and various aqueous solutions were studied at different supercoolings by a motion-picture technique. ln pure water contained in plastic capillary tubes, ice dendrites formed which at supercoolings between 1 and 4°C. grew parallel to the tube axis. At supercoolings larger than 4°C. the direction of growth was inclined to the tube axis such that the dendrites hit the tube wall and afterwards proceeded growing in a new direction. As a result it appeared that the ice crystals grew in a zig-zag or screw fashion. This growth mode became enhanced when the supercooling was increased or salts were dissolved in the water. In large water drops, ice dendrites formed which at supercoolings smaller than 1°C. were co-planar with the seed crystal and between 1° and 5°C. split into two dendritic segments. At supercoolings larger than 5°C. multiple splitting of the seed crystal was observed and this became strongly enhanced when salts were dissolved in the water. Tentative explanations for these results are given.

scholarly journals Growth Modes of Ice Crystals in Supercooled Water and Aqueous Solutions

1967 ◽  
Vol 6 (47) ◽  
pp. 651-662 ◽  
Author(s):  
H. R. Pruppacher
Keyword(s):  
Aqueous Solutions ◽  
Tube Wall ◽  
Pure Water ◽  
Supercooled Water ◽  
Seed Crystal ◽  
Ice Crystals ◽  
Tube Axis ◽  
Growth Modes ◽  
Water Drops ◽  
Large Water

The growth modes of ice crystals in supercooled water and various aqueous solutions were studied at different supercoolings by a motion-picture technique. ln pure water contained in plastic capillary tubes, ice dendrites formed which at supercoolings between 1 and 4°C. grew parallel to the tube axis. At supercoolings larger than 4°C. the direction of growth was inclined to the tube axis such that the dendrites hit the tube wall and afterwards proceeded growing in a new direction. As a result it appeared that the ice crystals grew in a zig-zag or screw fashion. This growth mode became enhanced when the supercooling was increased or salts were dissolved in the water. In large water drops, ice dendrites formed which at supercoolings smaller than 1°C. were co-planar with the seed crystal and between 1° and 5°C. split into two dendritic segments. At supercoolings larger than 5°C. multiple splitting of the seed crystal was observed and this became strongly enhanced when salts were dissolved in the water. Tentative explanations for these results are given.

Supercooled Water Drops Do Not Freeze During Impact on Hybrid Janus Particle-Based Surfaces

2018 ◽  
Vol 31 (1) ◽  
pp. 112-123 ◽  
Author(s):  
Madeleine Schwarzer ◽  
Thomas Otto ◽  
Markus Schremb ◽  
Claudia Marschelke ◽  
Hisaschi T. Tee ◽  
...  
Keyword(s):  
Supercooled Water ◽  
Janus Particle ◽  
Water Drops

scholarly journals Comment on evidence for surface-initiated homogenous nucleation

2003 ◽  
Vol 3 (4) ◽  
pp. 3361-3372 ◽  
Author(s):  
J. E. Kay ◽  
V. Tsemekhman ◽  
B. Larson ◽  
M. Baker ◽  
B. Swanson
Keyword(s):  
Laboratory Experiments ◽  
Drop Size ◽  
Supercooled Water ◽  
Ice Nucleation ◽  
Surface Nucleation ◽  
Embryo Formation ◽  
Homogenous Nucleation ◽  
Atmospheric Data ◽  
Water Drops

Abstract. We investigate theoretical, laboratory, and atmospheric evidence for a recently proposed hypothesis: homogenous ice nucleation occurs at the surface, not in the volume, of supercooled water drops. Using existing thermodynamic arguments, laboratory experiments, and atmospheric data, we conclude that ice embryo formation at the surface cannot be confirmed or disregarded. Ice nucleation rates measured as a function of drop size in an air ambient could help distinguish between volume and surface nucleation rates.

scholarly journals Comment on evidence for surface-initiated homogeneous nucleation

2003 ◽  
Vol 3 (5) ◽  
pp. 1439-1443 ◽  
Author(s):  
J. E. Kay ◽  
V. Tsemekhman ◽  
B. Larson ◽  
M. Baker ◽  
B. Swanson
Keyword(s):  
Homogeneous Nucleation ◽  
Laboratory Experiments ◽  
Drop Size ◽  
Supercooled Water ◽  
Ice Nucleation ◽  
Surface Nucleation ◽  
Embryo Formation ◽  
Atmospheric Data ◽  
Water Drops

Abstract. We investigate theoretical, laboratory, and atmospheric evidence for a recently proposed hypothesis: homogeneous ice nucleation initiates at the surface, not in the volume, of supercooled water drops. Using existing thermodynamic arguments, laboratory experiments, and atmospheric data, we conclude that ice embryo formation at the surface cannot be confirmed or disregarded. Ice nucleation rates measured as a function of drop size in an air ambient could help distinguish between volume and surface nucleation rates.

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