{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/120184"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/120184","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Measurements of soot sublimation and oxidation at high temperatures in a shock tube","abstract":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms","abstract_html":"Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms","abstract_has_math":false,"creators":["Willhardt, Colton Dean"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":["Glumac, Nick G"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2023,"date_issued":"2023-05","date_published":"2023-05","updated_at":"2026-07-22T22:24:57Z","subjects":["Soot","Sublimation","Oxidation","Surface Mass Loss","Shock Tube","Spectroscopy","Emission","Light"],"languages":["en","eng"],"rights":["Copyright 2023 Colton Willhardt"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/120184","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Glumac, Nick G"]},{"key":"dc:creator","label":"Author","values":["Willhardt, Colton Dean"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2023-05","2023-05-05"]},{"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":["Soot","Sublimation","Oxidation","Surface Mass Loss","Shock Tube","Spectroscopy","Emission","Light"]}]},{"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 2023 Colton Willhardt"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/120184"]}]},{"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 2023-09-01 without embargo terms","The student, Colton Willhardt, accepted the attached license on 2023-05-05 at 09:25.","The student, Colton Willhardt, submitted this Thesis for approval on 2023-05-05 at 09:40.","This Thesis was approved for publication on 2023-05-05 at 14:50.","DSpace SAF Submission Ingestion Package generated from Vireo submission #19351 on 2023-09-01 at 16:56:28","Understanding the optical emission of a conventional fireball is of importance to the defense community for developing remote sensing techniques to aid in strategic responses. Soot is a condensed phase particulate present in many combustion environments including fireballs and contributes significantly to optical emission. Soot has been studied extensively in lower temperature regimes less than 4000K, but little work has been done at the higher temperatures that can be expected in a fireball. In a fireball soot mixes into layers of high temperature gases vaporizing the particles on the order of microseconds. To better understand optical emissions in these environments it is necessary to make measurements of soot properties at these temperatures. Local soot concentrations are dependent on particle surface reactivity, which is significant in the relevant temperature regime, so measurements of surface reaction rates are necessary. Soot emission is dependent on particle temperature, and surface reactions contribute to the energy balance on the particle, necessitating measurements of particle temperature. Products of surface reactions will contribute to local emissions, requiring measurements of gaseous surface reaction products. Here, a heterogeneous shock tube is used to shock soot particles at temperatures of 3000-7000K in gas mixtures of Argon and 2. At these temperatures, the surface of the soot particle sublimates and oxidizes, decaying the particle over time. Particle temperature measurements are made, and it is shown that the soot temperature will never exceed its sublimation temperature of ~4000K in gas hotter than the soot sublimation temperature. Sublimation and oxidation reaction rates are measured with emission signal decay, extending previous measurements in the literature, and parameters are fit to sublimation and oxidation models. Gaseous products are identified by emission spectroscopy, and relative concentrations are measured over time."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Measurements of soot sublimation and oxidation at high temperatures in a shock tube"]}]}],"canonical_facts":{"dc:contributor":["Glumac, Nick G"],"dc:creator":["Willhardt, Colton Dean"],"dc:date":["2023-05","2023-05-05"],"dc:description":["Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms","The student, Colton Willhardt, accepted the attached license on 2023-05-05 at 09:25.","The student, Colton Willhardt, submitted this Thesis for approval on 2023-05-05 at 09:40.","This Thesis was approved for publication on 2023-05-05 at 14:50.","DSpace SAF Submission Ingestion Package generated from Vireo submission #19351 on 2023-09-01 at 16:56:28","Understanding the optical emission of a conventional fireball is of importance to the defense community for developing remote sensing techniques to aid in strategic responses. Soot is a condensed phase particulate present in many combustion environments including fireballs and contributes significantly to optical emission. Soot has been studied extensively in lower temperature regimes less than 4000K, but little work has been done at the higher temperatures that can be expected in a fireball. In a fireball soot mixes into layers of high temperature gases vaporizing the particles on the order of microseconds. To better understand optical emissions in these environments it is necessary to make measurements of soot properties at these temperatures. Local soot concentrations are dependent on particle surface reactivity, which is significant in the relevant temperature regime, so measurements of surface reaction rates are necessary. Soot emission is dependent on particle temperature, and surface reactions contribute to the energy balance on the particle, necessitating measurements of particle temperature. Products of surface reactions will contribute to local emissions, requiring measurements of gaseous surface reaction products. Here, a heterogeneous shock tube is used to shock soot particles at temperatures of 3000-7000K in gas mixtures of Argon and 2. At these temperatures, the surface of the soot particle sublimates and oxidizes, decaying the particle over time. Particle temperature measurements are made, and it is shown that the soot temperature will never exceed its sublimation temperature of ~4000K in gas hotter than the soot sublimation temperature. Sublimation and oxidation reaction rates are measured with emission signal decay, extending previous measurements in the literature, and parameters are fit to sublimation and oxidation models. Gaseous products are identified by emission spectroscopy, and relative concentrations are measured over time."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/120184"],"dc:language":["en","eng"],"dc:rights":["Copyright 2023 Colton Willhardt"],"dc:subject":["Soot","Sublimation","Oxidation","Surface Mass Loss","Shock Tube","Spectroscopy","Emission","Light"],"dc:title":["Measurements of soot sublimation and oxidation at high temperatures in a shock tube"],"dc:type":["text"],"thesis:degree_discipline":["Mechanical Engineering"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:57Z"}