scholarly journals Well-posedness of an extended model for water-ice phase transitions

2013 ◽  
Vol 6 (2) ◽  
pp. 439-460 ◽  
Author(s):  
Pavel Krejčí ◽  
◽  
Elisabetta Rocca ◽  
Keyword(s):  
Phase Transitions ◽  
Extended Model ◽  
Well Posedness ◽  
Water Ice ◽  
Ice Phase

Structural and Phase Transitions on Water Ice Surface Under HCl Exposure: Implication for Stratosphere Conditions

1998 ◽  
Vol 05 (01) ◽  
pp. 437-441
Author(s):  
N. M. Persiantseva ◽  
O. B. Popovicheva ◽  
T. V. Rakhimova
Keyword(s):  
Phase Transitions ◽  
Pressure Range ◽  
Phase State ◽  
Amorphous Solid ◽  
Surface Concentration ◽  
Uptake Kinetics ◽  
Water Ice ◽  
Uptake Efficiency ◽  
Ice Surface ◽  
Characteristic Values

The HCl-ice interaction has been investigated over a wide HCl pressure range of 10-7–10-4 Torr and ice temperatures 150–240 K. The Three characteristic values for HCl uptake efficiency were obtained which indicate the change of phase state and structure of the ice surface at increasing HCl pressure. The low value γ ≈ 0.1 ± 0.02 corresponds to HCl vapor interaction with pure ice and is realized at the atmosphere conditions. The value γ ≈ 0.5 ± 0.1 indicates the formation of hexahydrate HCl • 6H 2 O with increase of HCl pressure. And the largest value of γ ≈ 0.8 ± 0.1 is observed at appearance of liquid or amorphous solid 4:1 H 2O:HCl. The HCl uptake kinetics is analyzed. The flow of HCl molecules from the ice surface into the bulk is shown to play an important role in the redistribution of HCl molecules. It defines a low surface concentration of the adsorbed HCl molecules under stratospher condition at early times of interaction.

Transformations of Gosset rods as the structural basis of gas-hydrate-ice phase transitions

2009 ◽  
Vol 54 (4) ◽  
pp. 161-166 ◽  
Author(s):  
M. I. Samoĭlovich ◽  
A. L. Talis ◽  
G. F. Tereshchenko
Keyword(s):  
Phase Transitions ◽  
Gas Hydrate ◽  
Structural Basis ◽  
Ice Phase

Reversible Heat Exchange in the Nozzle with Water–Ice Phase Transition in Filtration of Air

2019 ◽  
Vol 28 (1) ◽  
pp. 103-113 ◽  
Author(s):  
I. V. Mezentsev ◽  
Yu. I. Aristov ◽  
N. N. Mezentseva ◽  
V. A. Mukhin
Keyword(s):  
Phase Transition ◽  
Heat Exchange ◽  
Water Ice ◽  
Ice Phase

scholarly journals On the Well-Posedness of A High Order Convective Cahn-Hilliard Type Equations

Algorithms ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 170 ◽  
Author(s):  
Giuseppe Maria Coclite ◽  
Lorenzo di Ruvo
Keyword(s):  
Cauchy Problem ◽  
Phase Transitions ◽  
High Order ◽  
Classical Solutions ◽  
Well Posedness ◽  
The Cauchy Problem ◽  
Oil Water ◽  
Surfactant Systems ◽  
Dynamics Of Phase Transitions

High order convective Cahn-Hilliard type equations describe the faceting of a growing surface, or the dynamics of phase transitions in ternary oil-water-surfactant systems. In this paper, we prove the well-posedness of the classical solutions for the Cauchy problem, associated with this equation.

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