Dynamics of the crystallization front induced by the temperature gradient at the upper boundary of a horizontal layer of a fluid
The dynamics of the crystallization front induced by the temperature gradient at the upper boundary of a horizontal layer of water bounded by flat thermostatted surfaces is studied. The formation and evolution of convective structures are visualized by methods of the Hilbert optics and digital video...
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| Veröffentlicht in: | Optoelectronics, instrumentation, and data processing instrumentation, and data processing, 2017-03, Vol.53 (2), p.131-135 |
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| container_title | Optoelectronics, instrumentation, and data processing |
| container_volume | 53 |
| creator | Arbuzov, V. A. Arbuzov, E. V. Dubnishchev, Yu. N. Berdnikov, V. S. Melekhina, O. S. |
| description | The dynamics of the crystallization front induced by the temperature gradient at the upper boundary of a horizontal layer of water bounded by flat thermostatted surfaces is studied. The formation and evolution of convective structures are visualized by methods of the Hilbert optics and digital video recording. The difference in the temperatures of the upper (T1) and lower (T2) thermostats satisfies the condition T1 < T2. In this system, the temperature of the cooled upper surface is an order parameter. Reaching a critical value of this parameter leads to a bifurcation phase transition from the liquid state (supercooled water) to the solid state (ice). The velocity and shape of the crystallization wave front are determined. The spatial-temporal state of the crystallization wave is found, in which the wave front shape is a line of equal velocities. The dynamic profile of the isothermal surface bounding the spatial shape of the solid phase is visualized. |
| doi_str_mv | 10.3103/S8756699017020042 |
| format | Article |
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Reaching a critical value of this parameter leads to a bifurcation phase transition from the liquid state (supercooled water) to the solid state (ice). The velocity and shape of the crystallization wave front are determined. The spatial-temporal state of the crystallization wave is found, in which the wave front shape is a line of equal velocities. 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| source | Springer Nature - Complete Springer Journals |
| subjects | Lasers Optical Devices Optical Information Technologies Optics Photonics Physics Physics and Astronomy |
| title | Dynamics of the crystallization front induced by the temperature gradient at the upper boundary of a horizontal layer of a fluid |
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