{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/124463"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/124463","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Experimental technique for concentration measurement using Magnetic Resonance Imaging","abstract":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms","abstract_html":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms","abstract_has_math":false,"creators":["Mathur Sekar, Abhisheka"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Aerospace Engineering","degree_department":null,"school":null,"contributors":["Villafane Roca, Laura"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2024,"date_issued":"2024-05","date_published":"2024-05","updated_at":"2026-07-22T22:25:00Z","subjects":["Dynamic Calibration","Magnetic Resonance Concentration","Magnetic Resonance Imaging","Reference Concentration"],"languages":["en","eng"],"rights":["Copyright 2024 Abhisheka Mathur Sekar"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/124463","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Villafane Roca, Laura"]},{"key":"dc:creator","label":"Author","values":["Mathur Sekar, Abhisheka"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2024-05","2024-05-03"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Aerospace 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":["Dynamic Calibration","Magnetic Resonance Concentration","Magnetic Resonance Imaging","Reference Concentration"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2024 Abhisheka Mathur Sekar"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/124463"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms","The student, Abhisheka Mathur Sekar, accepted the attached license on 2024-05-02 at 13:29.","The student, Abhisheka Mathur Sekar, submitted this Thesis for approval on 2024-05-02 at 13:34.","This Thesis was approved for publication on 2024-05-03 at 09:13.","DSpace SAF Submission Ingestion Package generated from Vireo submission #20761 on 2024-09-16 at 00:37:53","This master’s thesis introduces a thorough methodology for employing Magnetic Resonance Imaging (MRI) to conduct Magnetic Resonance Concentration (MRC) based analysis. This technique is designed to acquire three-dimensional, time-averaged concentration fields in complex turbulent flows, eliminating the need for optical access. Such an approach is particularly advantageous in studying how different fluid streams mix, providing valuable insights into a range of applications from jet engine film cooling to urban dispersion scenarios. The core of this study involves the meticulous selection of MRI scan settings, choice of fluids, and calibration procedures, which are crucial for accurately capturing the dynamics of mixing fluids. The research outlines a systematic investigation through the execution of three distinct scanning sequence, each tailored to meet specific objectives contributing to the comprehensive analysis of concentration fields. Initially, a static calibration is conducted using fifteen vials, each filled with a different concentration of CuSO4. This step is critical for determining the optimal scan parameters providing optimal signal to noise ratio, establishing baseline data that inform the settings for subsequent dynamic calibrations. During these dynamic calibrations, flow conditions are simulated within the test section to ascertain the reference concentration levels of CuSO4. Flip angles of 35º and 45º, derived from the static calibration, are employed to enhance the balance between signal-to-noise ratio, dynamic range, linear range and spatial resolution in the MRI results. The results from the dynamic calibration, established the reference and reference high concentrations of 0.01M and 0.045M CuSO4 respectively, underpin the main scans. These scans are detailed meticulously, covering logistics, experimental setups, and methodological frameworks. By providing this comprehensive methodological foundation, the thesis sets the stage for future research in fluid dynamics using Magnetic Resonance Imaging, paving the way for further explorations and analyses. The findings from the main MRC scans, which remain to be fully analyzed, promise to contribute significantly to our understanding of fluid mixing processes in various engineering and environmental contexts."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Experimental technique for concentration measurement using Magnetic Resonance Imaging"]}]}],"canonical_facts":{"dc:contributor":["Villafane Roca, Laura"],"dc:creator":["Mathur Sekar, Abhisheka"],"dc:date":["2024-05","2024-05-03"],"dc:description":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms","The student, Abhisheka Mathur Sekar, accepted the attached license on 2024-05-02 at 13:29.","The student, Abhisheka Mathur Sekar, submitted this Thesis for approval on 2024-05-02 at 13:34.","This Thesis was approved for publication on 2024-05-03 at 09:13.","DSpace SAF Submission Ingestion Package generated from Vireo submission #20761 on 2024-09-16 at 00:37:53","This master’s thesis introduces a thorough methodology for employing Magnetic Resonance Imaging (MRI) to conduct Magnetic Resonance Concentration (MRC) based analysis. This technique is designed to acquire three-dimensional, time-averaged concentration fields in complex turbulent flows, eliminating the need for optical access. Such an approach is particularly advantageous in studying how different fluid streams mix, providing valuable insights into a range of applications from jet engine film cooling to urban dispersion scenarios. The core of this study involves the meticulous selection of MRI scan settings, choice of fluids, and calibration procedures, which are crucial for accurately capturing the dynamics of mixing fluids. The research outlines a systematic investigation through the execution of three distinct scanning sequence, each tailored to meet specific objectives contributing to the comprehensive analysis of concentration fields. Initially, a static calibration is conducted using fifteen vials, each filled with a different concentration of CuSO4. This step is critical for determining the optimal scan parameters providing optimal signal to noise ratio, establishing baseline data that inform the settings for subsequent dynamic calibrations. During these dynamic calibrations, flow conditions are simulated within the test section to ascertain the reference concentration levels of CuSO4. Flip angles of 35º and 45º, derived from the static calibration, are employed to enhance the balance between signal-to-noise ratio, dynamic range, linear range and spatial resolution in the MRI results. The results from the dynamic calibration, established the reference and reference high concentrations of 0.01M and 0.045M CuSO4 respectively, underpin the main scans. These scans are detailed meticulously, covering logistics, experimental setups, and methodological frameworks. By providing this comprehensive methodological foundation, the thesis sets the stage for future research in fluid dynamics using Magnetic Resonance Imaging, paving the way for further explorations and analyses. The findings from the main MRC scans, which remain to be fully analyzed, promise to contribute significantly to our understanding of fluid mixing processes in various engineering and environmental contexts."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/124463"],"dc:language":["en","eng"],"dc:rights":["Copyright 2024 Abhisheka Mathur Sekar"],"dc:subject":["Dynamic Calibration","Magnetic Resonance Concentration","Magnetic Resonance Imaging","Reference Concentration"],"dc:title":["Experimental technique for concentration measurement using Magnetic Resonance Imaging"],"dc:type":["text"],"thesis:degree_discipline":["Aerospace Engineering"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:00Z"}