{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/97791"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/97791","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Thermo-fluid model of meniscus behavior and oscillation mark formation in steel continuous casting","abstract":"DSpace SAF Submission Ingestion Package generated from Vireo submission #11078 on 2017-08-10 at 15:07:08","abstract_html":"DSpace SAF Submission Ingestion Package generated from Vireo submission #11078 on 2017-08-10 at 15:07:08","abstract_has_math":false,"creators":["Yan, Xiaolu"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":["Thomas, Brian G."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-08-10T20:33:27Z","date_published":"2017-08-10T20:33:27Z","updated_at":"2026-07-22T22:24:34Z","subjects":["Continuous casting","Model","Oscillation mark"],"languages":["en"],"rights":["Copyright 2017 Xiaolu Yan"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/97791","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Thomas, Brian G."]},{"key":"dc:creator","label":"Author","values":["Yan, Xiaolu"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2017-08-10T20:33:27Z","2019-08-11T09:15:24Z","2017-04-28","2017-05"]},{"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":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"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":["Continuous casting","Model","Oscillation mark"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2017 Xiaolu Yan"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/97791"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["DSpace SAF Submission Ingestion Package generated from Vireo submission #11078 on 2017-08-10 at 15:07:08","The surface quality of steel depends on initial solidification at the meniscus during continuous casting. A computational thermal-fluid model has been developed to simulate the complex transient behavior of the slag layer between the oscillating mold wall, the slag rim, the slag/liquid steel interface, and the solidifying steel shell in the meniscus region. It includes transient heat transfer, multi-phase fluid flow, solidification of the slag and steel, and movement of the mold during several oscillation cycles. The model is validated with transient temperature measurements and shell strand measurements from a “mold simulator” lab experiment and with plant measurements of oscillation mark (OM) depth and slag consumption. Hook type oscillation mark is predicted to form by steel overflowing the meniscus. In addition to the commonly predicted/measured temperature increase during the negative strip time (NST), a smaller temperature increase is predicted during the positive strip time (PST) for thermocouples near steel level, and can be associated with the overflow event. These discoveries help to explain the overflow mechanism in detail and reveal new insights into the phenomena which govern initial solidification, oscillation mark formation, and surface defects in this process.","Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2019-05-01","The student, Xiaolu Yan, accepted the attached license on 2017-04-25 at 21:59.","The student, Xiaolu Yan, submitted this Thesis for approval on 2017-04-25 at 22:11.","This Thesis was approved for publication on 2017-04-28 at 08:40.","Made available in DSpace on 2017-08-10T20:33:27Z (GMT). No. of bitstreams: 2 YAN-THESIS-2017.pdf: 5071236 bytes, checksum: a56e7c5d4735a419226ce3accb9fef85 (MD5) LICENSE.txt: 4207 bytes, checksum: 2446e390cda471c6ccc7c7a6bdfb80ca (MD5) Previous issue date: 2017-04-28","Embargo set by: Colleen Fallaw for item 102844 Lift date: 2019-08-10T21:27:21Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system","U of I Only Restriction Lifted for Item 102844 on 2019-08-11T09:15:24Z."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Thermo-fluid model of meniscus behavior and oscillation mark formation in steel continuous casting"]}]}],"canonical_facts":{"dc:contributor":["Thomas, Brian G."],"dc:creator":["Yan, Xiaolu"],"dc:date":["2017-08-10T20:33:27Z","2019-08-11T09:15:24Z","2017-04-28","2017-05"],"dc:description":["DSpace SAF Submission Ingestion Package generated from Vireo submission #11078 on 2017-08-10 at 15:07:08","The surface quality of steel depends on initial solidification at the meniscus during continuous casting. A computational thermal-fluid model has been developed to simulate the complex transient behavior of the slag layer between the oscillating mold wall, the slag rim, the slag/liquid steel interface, and the solidifying steel shell in the meniscus region. It includes transient heat transfer, multi-phase fluid flow, solidification of the slag and steel, and movement of the mold during several oscillation cycles. The model is validated with transient temperature measurements and shell strand measurements from a “mold simulator” lab experiment and with plant measurements of oscillation mark (OM) depth and slag consumption. Hook type oscillation mark is predicted to form by steel overflowing the meniscus. In addition to the commonly predicted/measured temperature increase during the negative strip time (NST), a smaller temperature increase is predicted during the positive strip time (PST) for thermocouples near steel level, and can be associated with the overflow event. These discoveries help to explain the overflow mechanism in detail and reveal new insights into the phenomena which govern initial solidification, oscillation mark formation, and surface defects in this process.","Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2019-05-01","The student, Xiaolu Yan, accepted the attached license on 2017-04-25 at 21:59.","The student, Xiaolu Yan, submitted this Thesis for approval on 2017-04-25 at 22:11.","This Thesis was approved for publication on 2017-04-28 at 08:40.","Made available in DSpace on 2017-08-10T20:33:27Z (GMT). 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