2010
DOI: 10.4236/am.2010.13021
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Solidification and Structuresation of Instability Zones

Abstract: Two mathematical crystallization models describing structure formations in instability zones are proposed and justified. The first model, based on a phase field system, describes crystallization processes in binary alloys. The second model, based on a modified Biot model of a porous medium and the convective CahnHilliard model, governs oriented crystallization. Physical interpretation and numerical analysis are discussed.

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Cited by 16 publications
(9 citation statements)
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References 10 publications
(27 reference statements)
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“…In the gas behind the wave, along with the incident sound wave, the reflected sound wave and the and entropy-vortex wave occur (and a ripple occurs on the very surface of discontinuity) [9] (an analog of the Marangoni wave, see [10] and [11]). According to the results of [10] and [11], one can state that, in the two-dimensional case, the bifurcation of a critical stable shock wave leads, at a first stage, to intermittency (a band structure), and then, a ripple of an analog of the Marangoni wave occurs on the very surface of discontinuity, and this ripple generates jets shedding from the front the shock wave (an analog of dendrites in crystallization, see [10] and [11]).…”
Section: Discussionmentioning
confidence: 99%
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“…In the gas behind the wave, along with the incident sound wave, the reflected sound wave and the and entropy-vortex wave occur (and a ripple occurs on the very surface of discontinuity) [9] (an analog of the Marangoni wave, see [10] and [11]). According to the results of [10] and [11], one can state that, in the two-dimensional case, the bifurcation of a critical stable shock wave leads, at a first stage, to intermittency (a band structure), and then, a ripple of an analog of the Marangoni wave occurs on the very surface of discontinuity, and this ripple generates jets shedding from the front the shock wave (an analog of dendrites in crystallization, see [10] and [11]).…”
Section: Discussionmentioning
confidence: 99%
“…According to the results of [10] and [11], one can state that, in the two-dimensional case, the bifurcation of a critical stable shock wave leads, at a first stage, to intermittency (a band structure), and then, a ripple of an analog of the Marangoni wave occurs on the very surface of discontinuity, and this ripple generates jets shedding from the front the shock wave (an analog of dendrites in crystallization, see [10] and [11]). One can conjecture that, in the two-dimensional case, the bifurcation of the critical wave of discharge [12] leads to the formation of vortices.…”
Section: Discussionmentioning
confidence: 99%
“…Работа посвящена численному анализу модификации модели кристаллизации металлов, предложенной в [1] (см. также [2]).…”
Section: Introductionunclassified
“…Свойства пористой структуры формулируются с помощью модификации (см. [1,2]) модели Био [5] насыщенной пористой среды. Микроуровень ликвации описывается расширением модели Кана-Хилларда [6,7] спинодального распада с конвекцией, моделирующей диффузионное расслоение.…”
Section: Introductionunclassified
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