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Interactive Dynamics of Convection and Solidification : Nato Science Series E: - S. H. Davis

Interactive Dynamics of Convection and Solidification

Nato Science Series E:

By: S. H. Davis (Editor), H.E. Huppert (Editor), U. Muller (Editor), M.G. Worster (Editor)

Hardcover Published: 31st August 1992
ISBN: 9780792319108
Number Of Pages: 277

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The phase transformation from liquid to solid is a phenomenon central to a wide range of manufacturing and natural processes. The presence of phase transformation can drive convection in the melt through the liberation of latent heat, the rejection of solute, and the change of density upon freezing. The fluid mechanics itself can playa central role; the phase transformation can be strongly altered by convective transport in the liquid through the modification of the thermal and solutal environment of the solid-liquid interface; these local fields control the freezing characteristics at the interface. The convection can be generated naturally by buoyancy forces arising from gradients of temperature and concentration in the liquid, by density changes upon freezing, and by thermocapillary and solutocapillary forces on liquid-solid interfaces. The interactive coupling between solidification and convection forms the subject of this volume. Such coupled processes are significant on a large range of scales. Among the applications of interest are the manufacture of single crystals, the processing of surfaces using laser or molecular beams, and the processes of soldering and welding. One wants to understand and predict macrosegregation in castings, transport and fractionation in geological and geophysical systems, and heat accumulation in energy redistribution and storage systems. This volume contains papers presented at the NATO Advanced Research Workshop on "Interactive Dynamics of Convection and Solidification" held in Chamonix, France, March 8-13, 1992.

Morphological Stability and Convective Flow: Some Old and New Problemsp. 1
Rayleigh-Marangoni Bilayer Convection in Liquid Encapsulated Crystal Growthp. 15
Effect of Modulated Taylor-Vortex Flows on Crystal-Melt Interfacesp. 19
Stimulated Convection and Morphological Instabilityp. 23
Dynamics and Structure of an Aggregation Growing from a Diffusion Fieldp. 27
Microscale Coupling of Solidification and Flowp. 31
Weakly Nonlinear Morphological Instability Analysis of a Sphere Crystallizing from an Undercooled Meltp. 53
Flow-Induced Spatio-Temporal Dynamics in Directional Solidificationp. 57
Long-Wave Interactions in Morphological and Convective Instabilitiesp. 61
Nonlinear Analysis of Morphological Interactions Between Flow and Interface Shape in the Directional Solidification of a Binary Alloyp. 65
Nonlinear Dynamics Near the Onset of Cellular Growth During Thin-Film Solidification of a Binary Alloy: On the Observability of Weakly Nonlinear Statesp. 69
A Strongly Nonlinear Analysis of Morphological Stability of a Binary Alloy: Solutal Convection and the Effect of Density Mismatchp. 73
Buoyant Convection Near a Solidifying Dendritep. 77
Flow Interactions with Dendritic Mushy Zonesp. 81
Interaction of Thermal and Forced Convection with the Growth of Dendritic Crystalsp. 93
Effect of a Forced Flow on Dendritic Growthp. 97
The Effect of Convection Motion on Dendritic Growthp. 101
Nonlinear Dynamics in Cellular Solidification in Presence of Defectsp. 105
Surface Kinetics and Growth Morphologies of NH[subscript 4] Clp. 109
The Dynamics of Mushy Layersp. 113
Convection in the Mushy Zone During Directional Solidificationp. 139
Studies of Channel-Plume Convection During Solidificationp. 143
The Onset of Freckling in the Solidification of Binary Alloysp. 147
Nonequilibrium Effects in a Slurryp. 151
New Experiments on Compositional Convectionp. 155
Convective Aspects of Solidification Experiments Under Low Gravityp. 159
Time Dependent Aspects of Solidificationp. 179
Optimization Applied to Solidification Processesp. 183
Numerically Simulated Temperature Fields in a Gradient Furnace Modelling the Microgravity Environmentp. 187
Effect of Solidification Morphology on the Macroscopic Behavior of Solidification Systemsp. 191
Simulation of the Columnar Dendritic Solidification of a PB-SN Alloyp. 195
Scale Analysis and Numerical Simulation of Solidification of an Alloy Cooled at a Vertical Boundaryp. 199
Convective Effects on Solidification Grain Structurep. 203
Buoyancy-Driven Melt Pool Convection During Laser Surface Treatmentp. 217
Laser Surface Alloying of Al99.99 and AlSi[subscript 10]Mg with Cr and Nip. 221
Tin Ribbons Obtained by a Melt Spinning Processp. 225
Solidification by Planar-Flow Spin-Castingp. 229
A Numerical and Experimental Study of Wavy Ice Structure in a Parallel Plate Channelp. 233
Dynamical Solidification of the Liquid Flowing in a Cooling Cylindrical Channelp. 237
Convection and Macrosegregation in Magma Chambersp. 241
Rotating Convectionp. 261
Solidification and Convection in the Core of the Earthp. 265
Convection Driven Phase Change and Mass Transferp. 269
Closurep. 273
Cartoonp. 277
Table of Contents provided by Blackwell. All Rights Reserved.

ISBN: 9780792319108
ISBN-10: 0792319109
Series: Nato Science Series E:
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 277
Published: 31st August 1992
Publisher: Springer
Country of Publication: NL
Dimensions (cm): 23.5 x 15.5  x 1.75
Weight (kg): 1.31