{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/53042"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/53042","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"An analysis of self-cooling with infiltrated porous composites including the effect of the melt layer","abstract":"A detailed analytical model was developed to include the effect of the melting process on a porous composite which retards its own heating rate by sacrificing its infiltrant. A transient one-dimensional heat-transfer analysis was conducted considering both the heats absorbed by melting and vaporization of the infiltrant from within the matrix. A finite-thickness liquid layer was seen to exist above the composite surface as a result of the flow of liquid coolant onto the surface induced by the expansion of the coolant on melting. There existed a period of time during which the melt layer was subject to both depletion due to vaporization and renewal by the flow of liquid coolant onto the surface. As the heating process continued the melt layer was depleted and the liquid coolant vaporized from within the tungsten matrix. The analysis was solved by finite-difference techniques and programmed for the IBM 7040/1401 Digital Computing System. An extensive search was conducted to determine the dependence of temperature on the thermophysical properties of seven different metallic coolants. Data were obtained for the various infiltrants up to that time at which the melt layer vaporizes completely from above the composite surface. A fundamental understanding of the effects of the melting process and of assuming variable properties on the early stages of the self-cooling process was obtained.","abstract_html":"A detailed analytical model was developed to include the effect of the melting process on a porous composite which retards its own heating rate by sacrificing its infiltrant. A transient one-dimensional heat-transfer analysis was conducted considering both the heats absorbed by melting and vaporization of the infiltrant from within the matrix. A finite-thickness liquid layer was seen to exist above the composite surface as a result of the flow of liquid coolant onto the surface induced by the expansion of the coolant on melting. There existed a period of time during which the melt layer was subject to both depletion due to vaporization and renewal by the flow of liquid coolant onto the surface. As the heating process continued the melt layer was depleted and the liquid coolant vaporized from within the tungsten matrix. The analysis was solved by finite-difference techniques and programmed for the IBM 7040/1401 Digital Computing System. An extensive search was conducted to determine the dependence of temperature on the thermophysical properties of seven different metallic coolants. Data were obtained for the various infiltrants up to that time at which the melt layer vaporizes completely from above the composite surface. A fundamental understanding of the effects of the melting process and of assuming variable properties on the early stages of the self-cooling process was obtained.","abstract_has_math":false,"creators":["Berry, Maurice Robert"],"institution":"Virginia Polytechnic Institute","degree_name":"Master of Science","degree_level":"masters","degree_discipline":"Mechanical Engineering","degree_department":"Mechanical Engineering","school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1968,"date_issued":"1968","date_published":"1968","updated_at":"2026-07-22T22:19:56Z","subjects":[],"languages":["en_US"],"rights":["In Copyright"],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/10919/53042","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.department","label":"Department","values":["Mechanical Engineering"]},{"key":"dc:creator","label":"Author","values":["Berry, Maurice Robert"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2015-06-23T19:08:11Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2015-06-23T19:08:11Z"]},{"key":"dc:date.issued","label":"Date","values":["1968"]},{"key":"dc:publisher","label":"Institution","values":["Virginia Polytechnic Institute"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.dcmitype","label":"Dc Type Dcmitype","values":["Text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Virginia Polytechnic Institute"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en_US"]},{"key":"dc:rights","label":"Dc Rights","values":["In Copyright"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10919/53042"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["A detailed analytical model was developed to include the effect of the melting process on a porous composite which retards its own heating rate by sacrificing its infiltrant. A transient one-dimensional heat-transfer analysis was conducted considering both the heats absorbed by melting and vaporization of the infiltrant from within the matrix. A finite-thickness liquid layer was seen to exist above the composite surface as a result of the flow of liquid coolant onto the surface induced by the expansion of the coolant on melting. There existed a period of time during which the melt layer was subject to both depletion due to vaporization and renewal by the flow of liquid coolant onto the surface. As the heating process continued the melt layer was depleted and the liquid coolant vaporized from within the tungsten matrix. The analysis was solved by finite-difference techniques and programmed for the IBM 7040/1401 Digital Computing System. An extensive search was conducted to determine the dependence of temperature on the thermophysical properties of seven different metallic coolants. Data were obtained for the various infiltrants up to that time at which the melt layer vaporizes completely from above the composite surface. A fundamental understanding of the effects of the melting process and of assuming variable properties on the early stages of the self-cooling process was obtained."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Master of Science"]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["An analysis of self-cooling with infiltrated porous composites including the effect of the melt layer"]}]}],"canonical_facts":{"dc:contributor.department":["Mechanical Engineering"],"dc:creator":["Berry, Maurice Robert"],"dc:date.accessioned":["2015-06-23T19:08:11Z"],"dc:date.available":["2015-06-23T19:08:11Z"],"dc:date.issued":["1968"],"dc:description.abstract":["A detailed analytical model was developed to include the effect of the melting process on a porous composite which retards its own heating rate by sacrificing its infiltrant. A transient one-dimensional heat-transfer analysis was conducted considering both the heats absorbed by melting and vaporization of the infiltrant from within the matrix. A finite-thickness liquid layer was seen to exist above the composite surface as a result of the flow of liquid coolant onto the surface induced by the expansion of the coolant on melting. There existed a period of time during which the melt layer was subject to both depletion due to vaporization and renewal by the flow of liquid coolant onto the surface. As the heating process continued the melt layer was depleted and the liquid coolant vaporized from within the tungsten matrix. The analysis was solved by finite-difference techniques and programmed for the IBM 7040/1401 Digital Computing System. An extensive search was conducted to determine the dependence of temperature on the thermophysical properties of seven different metallic coolants. Data were obtained for the various infiltrants up to that time at which the melt layer vaporizes completely from above the composite surface. A fundamental understanding of the effects of the melting process and of assuming variable properties on the early stages of the self-cooling process was obtained."],"dc:description.degree":["Master of Science"],"dc:format.mimetype":["application/pdf"],"dc:identifier.uri":["http://hdl.handle.net/10919/53042"],"dc:language.iso":["en_US"],"dc:publisher":["Virginia Polytechnic Institute"],"dc:rights":["In Copyright"],"dc:rights.uri":["http://rightsstatements.org/vocab/InC/1.0/"],"dc:title":["An analysis of self-cooling with infiltrated porous composites including the effect of the melt layer"],"dc:type":["Thesis"],"dc:type.dcmitype":["Text"],"thesis:degree_discipline":["Mechanical Engineering"],"thesis:degree_level":["masters"],"thesis:degree_name":["Master of Science"],"thesis:institution_name":["Virginia Polytechnic Institute"]},"updated_at":"2026-07-22T22:19:56Z"}