Melt convection effects on the critical velocity of particle engulfment

Sen, S.; Dhindaw, B. K.; Stefanescu, Doru M.; Catalina, Adrian V.; Curreri, Peter A.

doi:10.1016/s0022-0248(96)00802-0

Cited by 46 publications

(38 citation statements)

References 15 publications

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“…The di!erent symbols correspond to the following particle materials in water: (a) copper with G+10 K m\ [19], the best-"t line has a slope of !0.9; (b) copper with G+10 K m\ [19], slope !1.2; (c) tungsten with G+10 K m\ [19], slope !0.4; (d) latex with G+10 K m\ [20], slope !1.0; (e) latex with G+4; 10 K m\ [21], slope !0.6; (f) latex with G+1.8; 10 K m\ [22], slope !0.9; (g) nylon with G+200 K m\ [23], slope !1.1. The upward pointing triangles correspond to polystyrene particles in a succinonitrile melt with G+10 K m\ and a slope of !1.0 [24]. The slope of the line through data set (h), for silicon carbide particles in a succinonitrile melt, is !0.9 [1].…”

Section: Particle Velocitymentioning

confidence: 98%

The interaction between a particle and an advancing solidification front

Rempel

Worster

1999

Journal of Crystal Growth

143

172

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We derive analytical expressions for the velocity of an insoluble particle near an advancing solidi"cation front when the intermolecular interactions are described by a power-law dependence between the "lm thickness and the undercooling. We predict that the maximum particle velocity, which corresponds to the lowest solidi"cation velocity at which particle trapping occurs, depends inversely on the particle radius. The critical velocity is less sensitive to the temperature gradient and the precise dependence changes with di!erent interaction types. When the critical velocity is exceeded, the particle becomes trapped within the solid region after being pushed slightly ahead of its initial position. The predicted particle displacement is typically only a fraction of the particle radius. Particle buoyancy can enhance or reduce the tendency for the particle to be captured, though it does not a!ect the parametric dependence of the critical velocity on the particle radius and the temperature gradient.

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Section: Particle Velocitymentioning

confidence: 98%

The interaction between a particle and an advancing solidification front

Rempel

Worster

1999

Journal of Crystal Growth

143

172

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“…By contrast, when smaller particles interacted with ice grown at lower solidification rates, particles were pushed ahead of the interface and remained nearly surrounded by the bulk liquid. Subsequent efforts to explain these phenomena have been driven by their importance to solidification dynamics in industrial and biological processes in addition to ground freezing phenomena ͑Uhlmann et Hoekstra and Miller, 1967;Bolling and Cissé, 1971;Omenyi and Neumann, 1976;Gilpin, 1980c;Bronshtein et al, 1981;Pötschke and Rogge, 1989;Azouni et al, 1990Azouni et al, , 1997Shangguan et al, 1992;Asthana and Tewari, 1993;Lipp and Körber, 1993;Sen et al, 1997͒. A comprehensive description of the underlying mechanisms was first given by Chernov and his colleagues ͑Chernov and Mel 'nikova, 1966;Chernov and Temkin, 1977͒, and has since been generalized and placed within the context of our modern understanding of premelting behavior ͑Dash, 1989b; Rempel andWorster, 1999, 2001͒. Intermolecular forces that act between the particle, ice, and liquid generate a premelted film and produce a net thermomolecular force that disjoins the particle from the ice surface.…”

Section: Frost Heavementioning

confidence: 99%

The physics of premelted ice and its geophysical consequences

2006

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The surface of ice exhibits the swath of phase-transition phenomena common to all materials and as such it acts as an ideal test bed of both theory and experiment. It is readily available, transparent, optically birefringent, and probing it in the laboratory does not require cryogenics or ultrahigh vacuum apparatus. Systematic study reveals the range of critical phenomena, equilibrium and nonequilibrium phase-transitions, and, most relevant to this review, premelting, that are traditionally studied in more simply bound solids. While this makes investigation of ice as a material appealing from the perspective of the physicist, its ubiquity and importance in the natural environment also make ice compelling to a broad range of disciplines in the Earth and planetary sciences. In this review we describe the physics of the premelting of ice and its relationship with the behavior of other materials more familiar to the condensed-matter community. A number of the many tendrils of the basic phenomena as they play out on land, in the oceans, and throughout the atmosphere and biosphere are developed.

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“…Their behavior could be analyzed mainly on the basis of low melting temperature model liquids. Numerous authors performed simulations and experiments on the behavior of non-metallic particles during the process taking place in CCS [1][2][6][7][8][9][10][11][12]. A CCD [4] or digital camera, or a laser microscope was used for experimental analyses of the particle/ front interaction [13].…”

Section: Introductionmentioning

confidence: 99%

Interaction mechanism of non-metallic particles with crystallization front

Żak¹,

Kalisz²,

Rączkowski³

2017

Archives of Metallurgy and Materials

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The process of steel solidification in the CCS mould is accompanied by a number of phenomena relating to the formation of non-metallic phase, as well as the mechanism of its interaction with the existing precipitations and the advancing crystallization front. In the solidification process the non-metallic inclusions may be absorbed or repelled by the moving front. As a result a specific distribution of non-metallic inclusions is obtained in the solidified ingot, and their distribution is a consequence of these processes. The interaction of a non-metallic inclusion with the solidification front was analyzed for alumina, for different values of the particle radius. The simulation was performed with the use of own computer program. Each time a balance of forces acting on a particle in its specific position was calculated. On this basis the change of position of alumina particle in relation to the front was defined for a specific radius and original location of the particle with respect to the front.

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Melt convection effects on the critical velocity of particle engulfment

Cited by 46 publications

References 15 publications

The interaction between a particle and an advancing solidification front

The interaction between a particle and an advancing solidification front

The physics of premelted ice and its geophysical consequences

Interaction mechanism of non-metallic particles with crystallization front

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