Direct numerical simulation of solidification microstructures affected by fluid flow

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Description

The effects of fluid flow on the solidification morphology of pure materials and solute microsegregation patterns of binary alloys are studied using a computational methodology based on a front tracking/finite difference method. A general single field formulation is presented for the full coupling of phase change, fluid flow, heat and solute transport. This formulation accounts for interfacial rejection/absorption of latent heat and solute, interfacial anisotropies, discontinuities in material properties between the liquid and solid phases, shrinkage/expansion upon solidification and motion and deformation of the solid. Numerical results are presented for the two dimensional dendritic solidification of pure succinonitrile and the ... continued below

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11 p.

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Juric, D. December 1, 1997.

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Description

The effects of fluid flow on the solidification morphology of pure materials and solute microsegregation patterns of binary alloys are studied using a computational methodology based on a front tracking/finite difference method. A general single field formulation is presented for the full coupling of phase change, fluid flow, heat and solute transport. This formulation accounts for interfacial rejection/absorption of latent heat and solute, interfacial anisotropies, discontinuities in material properties between the liquid and solid phases, shrinkage/expansion upon solidification and motion and deformation of the solid. Numerical results are presented for the two dimensional dendritic solidification of pure succinonitrile and the solidification of globulitic grains of a plutonium-gallium alloy. For both problems, comparisons are made between solidification without fluid flow and solidification within a shear flow.

Physical Description

11 p.

Notes

INIS; OSTI as DE98001611

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  • 8. international conference on modeling of casting, welding and advanced solidification processes, San Diego, CA (United States), 7-12 Jun 1998

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  • Other: DE98001611
  • Report No.: LA-UR--97-3918
  • Report No.: CONF-980635--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 645520
  • Archival Resource Key: ark:/67531/metadc696792

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  • December 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 25, 2016, 4:02 p.m.

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Juric, D. Direct numerical simulation of solidification microstructures affected by fluid flow, article, December 1, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc696792/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.