Numerical analysis of separation and mixing dynamics in multiphase granular systems

Tracy Rushmer, Antoinette Tordesillas, David M. Walker, Nick Petford

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

1 Citation (Scopus)

Abstract

Differentiation is the separation of a fluid phase from its host. Metal-silicate differentiation is the fundamental mechanism by which the terrestrial planets have formed from undifferentiated planetary materials and how economic elements can be concentrated in the Earth's crust. This study uses the observed experimental granular rock textures as templates so numerical modeling can quantify flow processes and deformation regimes. To further the modeling, we have developed an innovative approach that combines experimental textures with silicate melt present with Complex Network Analyses. We have extracted unambiguous mixing patterns in the metal-silicate melt system to help determine under what conditions liquid metal and silicate melt tend to separate. This approach can elucidate and quantify the growth of metallic blebs in regions where a silicate mush matrix is present and help predict separation. We apply these results to core formation scenarios in the early solar system in growing planetesimals.

Original languageEnglish
Title of host publicationPowders and grains 2013
Subtitle of host publicationproceedings of the 7th International Conference on Micromechanics of Granular Media: Sydney, Australia: 8-12 July 2013
EditorsAibing Yu, Kejun Dong, Runyu Yang, Stefan Luding
Place of PublicationMelville, NY
PublisherAmerican Institute of Physics
Pages751-754
Number of pages4
ISBN (Print)9780735411661
DOIs
Publication statusPublished - 2013
Event7th International Conference on Micromechanics of Granular Media: Powders and Grains 2013 - Sydney, NSW, Australia
Duration: 8 Jul 201312 Jul 2013

Publication series

NameAIP Conference Proceedings
Volume1542
ISSN (Print)0094-243X

Other

Other7th International Conference on Micromechanics of Granular Media: Powders and Grains 2013
CountryAustralia
CitySydney, NSW
Period8/07/1312/07/13

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