Convective instability of solidification with a phase transition zone / Alexandrov D. V.,Malygin A. P. // JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS. - 2011. - V. 112, l. 4. - P. 596-601.

ISSN/EISSN:

1063-7761 / нет данных

Type:

Article

Abstract:

The morphological instability of solidification is analytically studied in the presence of an anisotropic and heterogeneous phase transition zone with allowance for a liquid flow and convective heat-andmass transfer in this two-phase zone. The mechanism of breaking the stability of solidification is considered; it consists in a convective heat and impurity transfer during a liquid flow along channels in the phase transition zone. The morphological instability is subjected to linear analysis with allowance for a liquid flow in the liquid phase of the system, impurity diffusion in the two-phase zone, and the dependence of the transfer coefficients on the phase composition. The perturbation evolution parameter is determined for an anisotropic and heterogeneous two-phase zone, and neutral stability curves of the process are obtained. It is shown that taking into account impurity diffusion and an increase in the heterogeneity of the phase transition zone broaden the instability region and that a decrease in the anisotropy narrows this region. A new criterion of convective morphological instability of solidification with a two-phase zone is found, and it substantially broadens the instability region when the liquid flow velocity increases.

Author keywords:

DILUTE BINARY ALLOY; YOUNG SEA-ICE; STABILITY ANALYSIS; EVOLUTION; BOUNDARY; CHIMNEYS; OCEAN; LEADS; LAYER; FLOW

DOI:

10.1134/S1063776111030010

Web of Science ID:

ISI:000290682600006

Соавторы в МНС:

Другие поля

Поле	Значение
Month	APR
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	DILUTE BINARY ALLOY; YOUNG SEA-ICE; STABILITY ANALYSIS; EVOLUTION; BOUNDARY; CHIMNEYS; OCEAN; LEADS; LAYER; FLOW
Research-Areas	Physics
Web-of-Science-Categories	Physics, Multidisciplinary
Author-Email	Alexey.Malygin@usu.ru
ResearcherID-Numbers	Alexandrov, Dmitri/D-2516-2016
ORCID-Numbers	Alexandrov, Dmitri/0000-0002-6628-745X
Funding-Acknowledgement	Russian Foundation for Basic Research {[}08-01-00298]; program Scientific and Scientific-Pedagogical Personnel of Innovation Russia
Funding-Text	This work was supported by the Russian Foundation for Basic Research (project no. 08-01-00298) and the program Scientific and Scientific-Pedagogical Personnel of Innovation Russia (2009-2013).
Number-of-Cited-References	29
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	2
Journal-ISO	J. Exp. Theor. Phys.
Doc-Delivery-Number	765DC