{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/70129"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/70129","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Radiative Heat Transfer for Emitting, Absorbing and Scattering Planar Media","abstract":"This analytical and experimental effort is directed toward understanding and predicting the radiative heat transfer in planar gas and particulate systems. The analysis models both nongray absorption of the gas phase by the exponential wide band model and the redirection of radiant energy by particulate scattering through the optical path length concept. The total hemispherical emittance for a single gas species in an isothermal planar layer with scattering particulate is developed. Exact results for a gas species of H(,2)O or CO(,2) are presented. A factor to incorporate scattering is presented to more easily utilize the analysis. The analysis is also applied to typical combustion processes. The results are given in terms of variables which are known or easily measured.","abstract_html":"This analytical and experimental effort is directed toward understanding and predicting the radiative heat transfer in planar gas and particulate systems. The analysis models both nongray absorption of the gas phase by the exponential wide band model and the redirection of radiant energy by particulate scattering through the optical path length concept. The total hemispherical emittance for a single gas species in an isothermal planar layer with scattering particulate is developed. Exact results for a gas species of H(,2)O or CO(,2) are presented. A factor to incorporate scattering is presented to more easily utilize the analysis. The analysis is also applied to typical combustion processes. The results are given in terms of variables which are known or easily measured.","abstract_has_math":false,"creators":["Skocypec, Russell Douglas"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":null,"date_issued":"10000-01-01","date_published":"10000-01-01","updated_at":"2026-07-22T22:26:02Z","subjects":["Engineering, Mechanical"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI8511674"],"render_values":[{"text":"(UMI)AAI8511674","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/70129","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Skocypec, Russell Douglas"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["10000-01-01","1985","2014-12-15T21:41:20Z"]},{"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":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"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":["Engineering, Mechanical"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/70129","(UMI)AAI8511674"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["This analytical and experimental effort is directed toward understanding and predicting the radiative heat transfer in planar gas and particulate systems. The analysis models both nongray absorption of the gas phase by the exponential wide band model and the redirection of radiant energy by particulate scattering through the optical path length concept. The total hemispherical emittance for a single gas species in an isothermal planar layer with scattering particulate is developed. Exact results for a gas species of H(,2)O or CO(,2) are presented. A factor to incorporate scattering is presented to more easily utilize the analysis. The analysis is also applied to typical combustion processes. The results are given in terms of variables which are known or easily measured.","A solution technique is also developed which predicts the radiative heat transfer in a layer having any temperature distribution. The analysis is not restricted to heat transfer, however, and can be applied to radiative transfer for a medium having any internal source distribution. The solution technique predicts the transfer from any single source by solving the photon equation of transfer. Path length distributions are shown for a number of layers and source locations. The technique models isothermal layers very accurately by summing the contributions from a finite number of sources. By weighting the sources appropriately, a nonisothermal layer of particulate is modeled. Results indicate the effect of the cold boundary region on the flux leaving the layer.","An experimental system is developed to obtain a hot layer of gas and particulate which flows through a test section with cooled walls. Intrusive probes characterize the medium in terms of particle loading and temperature, and the normally-directed energy emitted from the one dimensional planar medium is measured radiometrically. Gas and particle flow are controlled. An optical system is designed to obtain spectral emittance data from the layer.","An experimental investigation is undertaken yielding emittance data from a layer containing carbon dioxide and nitrogen gases, and particulate of BNi-2. Emittance data is presented and exhibits the effects of particulate scattering. An extension of the 4.3 micron carbon dioxide band wings due to scattering is noted. Emittance data for both pure gas and gas and particulate media are compared to analytical predictions.","Made available in DSpace on 2014-12-15T21:41:20Z (GMT). No. of bitstreams: 1 8511674.pdf: 14050755 bytes, checksum: 2c6f8207d68e68db8f7aa7d06397c8ff (MD5) Previous issue date: 1985","Embargo set by: Seth Robbins for item 70295 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","485 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1985."]},{"key":"dc:title","label":"Title","values":["Radiative Heat Transfer for Emitting, Absorbing and Scattering Planar Media"]}]}],"canonical_facts":{"dc:creator":["Skocypec, Russell Douglas"],"dc:date":["10000-01-01","1985","2014-12-15T21:41:20Z"],"dc:description":["This analytical and experimental effort is directed toward understanding and predicting the radiative heat transfer in planar gas and particulate systems. The analysis models both nongray absorption of the gas phase by the exponential wide band model and the redirection of radiant energy by particulate scattering through the optical path length concept. The total hemispherical emittance for a single gas species in an isothermal planar layer with scattering particulate is developed. Exact results for a gas species of H(,2)O or CO(,2) are presented. A factor to incorporate scattering is presented to more easily utilize the analysis. The analysis is also applied to typical combustion processes. The results are given in terms of variables which are known or easily measured.","A solution technique is also developed which predicts the radiative heat transfer in a layer having any temperature distribution. The analysis is not restricted to heat transfer, however, and can be applied to radiative transfer for a medium having any internal source distribution. The solution technique predicts the transfer from any single source by solving the photon equation of transfer. Path length distributions are shown for a number of layers and source locations. The technique models isothermal layers very accurately by summing the contributions from a finite number of sources. By weighting the sources appropriately, a nonisothermal layer of particulate is modeled. Results indicate the effect of the cold boundary region on the flux leaving the layer.","An experimental system is developed to obtain a hot layer of gas and particulate which flows through a test section with cooled walls. Intrusive probes characterize the medium in terms of particle loading and temperature, and the normally-directed energy emitted from the one dimensional planar medium is measured radiometrically. Gas and particle flow are controlled. An optical system is designed to obtain spectral emittance data from the layer.","An experimental investigation is undertaken yielding emittance data from a layer containing carbon dioxide and nitrogen gases, and particulate of BNi-2. Emittance data is presented and exhibits the effects of particulate scattering. An extension of the 4.3 micron carbon dioxide band wings due to scattering is noted. Emittance data for both pure gas and gas and particulate media are compared to analytical predictions.","Made available in DSpace on 2014-12-15T21:41:20Z (GMT). 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