{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/70157"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/70157","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"The Effect of Shear Flow on Solidification Microstructures","abstract":"Calculations are performed to determine the effect of fluid flow near a solidifying interface on the temperature and concentration fields existing during solidification, and the changes wrought on the microstructure by those fields. The solidification interface position and speed are controlled by two boundary conditions, corresponding to local thermodynamic equilibrium and conservation of mass. A three dimensional model of the solidifying interface is constructed, and the velocity, temperature and concentration fields are calculated for a wide range of alloy compositions and process conditions.","abstract_html":"Calculations are performed to determine the effect of fluid flow near a solidifying interface on the temperature and concentration fields existing during solidification, and the changes wrought on the microstructure by those fields. The solidification interface position and speed are controlled by two boundary conditions, corresponding to local thermodynamic equilibrium and conservation of mass. A three dimensional model of the solidifying interface is constructed, and the velocity, temperature and concentration fields are calculated for a wide range of alloy compositions and process conditions.","abstract_has_math":false,"creators":["Chao, Long-Sun"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-12-15T21:41:37Z","date_published":"2014-12-15T21:41:37Z","updated_at":"2026-07-22T22:26:02Z","subjects":["Engineering, Mechanical","Engineering, Metallurgy","Engineering, Materials Science"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI8908647"],"render_values":[{"text":"(UMI)AAI8908647","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/70157","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Chao, Long-Sun"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2014-12-15T21:41:37Z","10000-01-01","1988"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engineering, Mechanical","Engineering, Metallurgy","Engineering, Materials Science"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/70157","(UMI)AAI8908647"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Calculations are performed to determine the effect of fluid flow near a solidifying interface on the temperature and concentration fields existing during solidification, and the changes wrought on the microstructure by those fields. The solidification interface position and speed are controlled by two boundary conditions, corresponding to local thermodynamic equilibrium and conservation of mass. A three dimensional model of the solidifying interface is constructed, and the velocity, temperature and concentration fields are calculated for a wide range of alloy compositions and process conditions.","It is demonstrated that solute redistribution, caused by the fluid flow near interface, can be counteracted by changes in the morphology of the solidification interface. The cellular interface is shown to translate into the flow as it advances in the direction of the heat flux vector, the net effect being an inclination of the cells into the flow direction. Microstructures are predicted for several compositions and processing conditions in the Sn-Pb system.","Made available in DSpace on 2014-12-15T21:41:37Z (GMT). No. of bitstreams: 1 8908647.pdf: 2533573 bytes, checksum: 5b475d17a9de56a51e0d6a0cc6fc1342 (MD5) Previous issue date: 1988","Embargo set by: Seth Robbins for item 70323 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","106 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1988."]},{"key":"dc:title","label":"Title","values":["The Effect of Shear Flow on Solidification Microstructures"]}]}],"canonical_facts":{"dc:creator":["Chao, Long-Sun"],"dc:date":["2014-12-15T21:41:37Z","10000-01-01","1988"],"dc:description":["Calculations are performed to determine the effect of fluid flow near a solidifying interface on the temperature and concentration fields existing during solidification, and the changes wrought on the microstructure by those fields. The solidification interface position and speed are controlled by two boundary conditions, corresponding to local thermodynamic equilibrium and conservation of mass. A three dimensional model of the solidifying interface is constructed, and the velocity, temperature and concentration fields are calculated for a wide range of alloy compositions and process conditions.","It is demonstrated that solute redistribution, caused by the fluid flow near interface, can be counteracted by changes in the morphology of the solidification interface. The cellular interface is shown to translate into the flow as it advances in the direction of the heat flux vector, the net effect being an inclination of the cells into the flow direction. Microstructures are predicted for several compositions and processing conditions in the Sn-Pb system.","Made available in DSpace on 2014-12-15T21:41:37Z (GMT). No. of bitstreams: 1 8908647.pdf: 2533573 bytes, checksum: 5b475d17a9de56a51e0d6a0cc6fc1342 (MD5) Previous issue date: 1988","Embargo set by: Seth Robbins for item 70323 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","106 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1988."],"dc:identifier":["http://hdl.handle.net/2142/70157","(UMI)AAI8908647"],"dc:subject":["Engineering, Mechanical","Engineering, Metallurgy","Engineering, Materials Science"],"dc:title":["The Effect of Shear Flow on Solidification Microstructures"],"dc:type":["text"],"thesis:degree_discipline":["Mechanical Engineering"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:02Z"}