{"id":{"repo_id":"ohiolink","oai_identifier":"oai:etd.ohiolink.edu:case1364996750"},"canonical_url":"https://search.dev.ndltd.org/etd/ohiolink/oai:etd.ohiolink.edu:case1364996750","repository":{"repo_id":"ohiolink","name":"OhioLINK","base_url":"https://etd.ohiolink.edu/acprod/odb_etd/ws/oai/oai"},"display":{"title":"DEVELOPMENT AND VALIDATION OF AN ANALYTICAL CHARGE-HOLD-VENT MODEL FOR CRYOGENIC TANK CHILLDOWN","abstract":"A transient Charge-Hold-Vent (CHV) analytical model has been developed and validatedwith hydrogen experimental CHV data. The model was found to be within 7% agreementof the data. The model simulates natural convection and jet impingement heat transferinteractions using quasi-unsteady steps in time and tracks the fluids thermodynamic behaviorthrough REFPROP. The additional cooling potential made available through the cyclicventing technique is calculated in the code. The model can simulate multiple CHV cyclesand provide predictions on the amount of fluid mass used for each cycle. The impact ofvarying tank geometry, nozzle position, and fluid type may be simulated and consideredwhen planning future CHV tests.","abstract_html":"A transient Charge-Hold-Vent (CHV) analytical model has been developed and validatedwith hydrogen experimental CHV data. The model was found to be within 7% agreementof the data. The model simulates natural convection and jet impingement heat transferinteractions using quasi-unsteady steps in time and tracks the fluids thermodynamic behaviorthrough REFPROP. The additional cooling potential made available through the cyclicventing technique is calculated in the code. The model can simulate multiple CHV cyclesand provide predictions on the amount of fluid mass used for each cycle. The impact ofvarying tank geometry, nozzle position, and fluid type may be simulated and consideredwhen planning future CHV tests.","abstract_has_math":false,"creators":["Keefer, Keaton Andrew"],"institution":"Case Western Reserve University School of Graduate Studies","degree_name":"Master of Sciences","degree_level":"masters","degree_discipline":"EMC - Mechanical Engineering","degree_department":null,"school":null,"contributors":["Barnhart, Paul"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2013,"date_issued":"2013-08-19","date_published":"2013-08-19","updated_at":"2026-07-24T03:37:16Z","subjects":["Aerospace Engineering","Mechanical Engineering","Cryogenics","Chilldown","Charge","Hold","Vent","Fuel Depot"],"languages":["English"],"rights":["unrestricted","This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://rave.ohiolink.edu/etdc/view?acc_num=case1364996750","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Barnhart, Paul"]},{"key":"dc:creator","label":"Author","values":["Keefer, Keaton Andrew"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2013-08-19"]},{"key":"dc:publisher","label":"Institution","values":["Case Western Reserve University School of Graduate Studies / OhioLINK"]},{"key":"dc:type","label":"Dc Type","values":["Electronic Thesis or Dissertation"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["EMC - Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Sciences"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Case Western Reserve University School of Graduate Studies"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Aerospace Engineering","Mechanical Engineering","Cryogenics","Chilldown","Charge","Hold","Vent","Fuel Depot"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English"]},{"key":"dc:rights","label":"Dc Rights","values":["unrestricted","This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://rave.ohiolink.edu/etdc/view?acc_num=case1364996750"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["A transient Charge-Hold-Vent (CHV) analytical model has been developed and validatedwith hydrogen experimental CHV data. The model was found to be within 7% agreementof the data. The model simulates natural convection and jet impingement heat transferinteractions using quasi-unsteady steps in time and tracks the fluids thermodynamic behaviorthrough REFPROP. The additional cooling potential made available through the cyclicventing technique is calculated in the code. The model can simulate multiple CHV cyclesand provide predictions on the amount of fluid mass used for each cycle. The impact ofvarying tank geometry, nozzle position, and fluid type may be simulated and consideredwhen planning future CHV tests."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf","p.107","2.87 MB"]},{"key":"dc:title","label":"Title","values":["DEVELOPMENT AND VALIDATION OF AN ANALYTICAL CHARGE-HOLD-VENT MODEL FOR CRYOGENIC TANK CHILLDOWN"]}]}],"canonical_facts":{"dc:contributor":["Barnhart, Paul"],"dc:creator":["Keefer, Keaton Andrew"],"dc:date":["2013-08-19"],"dc:description":["A transient Charge-Hold-Vent (CHV) analytical model has been developed and validatedwith hydrogen experimental CHV data. The model was found to be within 7% agreementof the data. The model simulates natural convection and jet impingement heat transferinteractions using quasi-unsteady steps in time and tracks the fluids thermodynamic behaviorthrough REFPROP. The additional cooling potential made available through the cyclicventing technique is calculated in the code. The model can simulate multiple CHV cyclesand provide predictions on the amount of fluid mass used for each cycle. The impact ofvarying tank geometry, nozzle position, and fluid type may be simulated and consideredwhen planning future CHV tests."],"dc:format":["application/pdf","p.107","2.87 MB"],"dc:identifier":["http://rave.ohiolink.edu/etdc/view?acc_num=case1364996750"],"dc:language":["English"],"dc:publisher":["Case Western Reserve University School of Graduate Studies / OhioLINK"],"dc:rights":["unrestricted","This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws."],"dc:subject":["Aerospace Engineering","Mechanical Engineering","Cryogenics","Chilldown","Charge","Hold","Vent","Fuel Depot"],"dc:title":["DEVELOPMENT AND VALIDATION OF AN ANALYTICAL CHARGE-HOLD-VENT MODEL FOR CRYOGENIC TANK CHILLDOWN"],"dc:type":["Electronic Thesis or Dissertation"],"thesis:degree_discipline":["EMC - Mechanical Engineering"],"thesis:degree_level":["masters"],"thesis:degree_name":["Master of Sciences"],"thesis:institution_name":["Case Western Reserve University School of Graduate Studies"]},"updated_at":"2026-07-24T03:37:16Z"}