{"id":{"repo_id":"cape-town","oai_identifier":"oai:open.uct.ac.za:11427/14055"},"canonical_url":"https://search.dev.ndltd.org/etd/cape-town/oai:open.uct.ac.za:11427/14055","repository":{"repo_id":"cape-town","name":"University of Cape Town","base_url":"https://open.uct.ac.za/oai/request"},"display":{"title":"Heat transfer to liquid metals, with observations on the effect of super-imposed free convection in turbulent flow","abstract":"Evaluation of the different theories of heat transfer to liquid metals requires values of the ratio of eddy diffusivities of heat and momentum, which may be obtained from temperature and velocity profiles measured in the flowing liquid metal. Temperature profiles have been reported by a number of workers, but these results are in poor agreement and this investigation was undertaken to measure further profiles and thus obtain reliable eddy diffusivities. Chapter 1 introduces the background to liquid metal heat transfer theory, and Chapter 2 contains a discussion of the experimental apparatus that was constructed for the purposes of this investigation. A description of this equipment he-s been published (Ref. 64) and the material is included here with the permission of the candidate's supervisor. Chapter 3 discusses the unsuccessful attempts to measure velocity profiles, and then goes on to consider appropriate values of the eddy diffusivity of momentum, based on the universal velocity profile. The data of Nikuradse are recommended after a careful study of all the available data and the author believes that this is a conclusion which will be useful to other workers in the field, who usually make an essentially random choice of eddy diffusivities.","abstract_html":"Evaluation of the different theories of heat transfer to liquid metals requires values of the ratio of eddy diffusivities of heat and momentum, which may be obtained from temperature and velocity profiles measured in the flowing liquid metal. Temperature profiles have been reported by a number of workers, but these results are in poor agreement and this investigation was undertaken to measure further profiles and thus obtain reliable eddy diffusivities. Chapter 1 introduces the background to liquid metal heat transfer theory, and Chapter 2 contains a discussion of the experimental apparatus that was constructed for the purposes of this investigation. A description of this equipment he-s been published (Ref. 64) and the material is included here with the permission of the candidate's supervisor. Chapter 3 discusses the unsuccessful attempts to measure velocity profiles, and then goes on to consider appropriate values of the eddy diffusivity of momentum, based on the universal velocity profile. The data of Nikuradse are recommended after a careful study of all the available data and the author believes that this is a conclusion which will be useful to other workers in the field, who usually make an essentially random choice of eddy diffusivities.","abstract_has_math":false,"creators":["Buhr, Heinrich Otto"],"institution":"Department of Chemical Engineering","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Carr, A D"],"committee_chairs":[],"committee_members":[],"year":1967,"date_issued":"1967","date_published":"1967","updated_at":"2026-07-22T22:22:44Z","subjects":[],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11427/14055","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Carr, A D"]},{"key":"dc:creator","label":"Author","values":["Buhr, Heinrich Otto"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2015-09-23T07:33:10Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2015-09-23T07:33:10Z"]},{"key":"dc:date.issued","label":"Date","values":["1967"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Department of Chemical Engineering"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["University of Cape Town"]},{"key":"dc:type","label":"Dc Type","values":["Doctoral Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["Doctoral"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["PhD"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11427/14055"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Evaluation of the different theories of heat transfer to liquid metals requires values of the ratio of eddy diffusivities of heat and momentum, which may be obtained from temperature and velocity profiles measured in the flowing liquid metal. Temperature profiles have been reported by a number of workers, but these results are in poor agreement and this investigation was undertaken to measure further profiles and thus obtain reliable eddy diffusivities. Chapter 1 introduces the background to liquid metal heat transfer theory, and Chapter 2 contains a discussion of the experimental apparatus that was constructed for the purposes of this investigation. A description of this equipment he-s been published (Ref. 64) and the material is included here with the permission of the candidate's supervisor. Chapter 3 discusses the unsuccessful attempts to measure velocity profiles, and then goes on to consider appropriate values of the eddy diffusivity of momentum, based on the universal velocity profile. The data of Nikuradse are recommended after a careful study of all the available data and the author believes that this is a conclusion which will be useful to other workers in the field, who usually make an essentially random choice of eddy diffusivities."]},{"key":"dc:title","label":"Title","values":["Heat transfer to liquid metals, with observations on the effect of super-imposed free convection in turbulent flow"]}]}],"canonical_facts":{"dc:contributor.advisor":["Carr, A D"],"dc:creator":["Buhr, Heinrich Otto"],"dc:date.accessioned":["2015-09-23T07:33:10Z"],"dc:date.available":["2015-09-23T07:33:10Z"],"dc:date.issued":["1967"],"dc:description.abstract":["Evaluation of the different theories of heat transfer to liquid metals requires values of the ratio of eddy diffusivities of heat and momentum, which may be obtained from temperature and velocity profiles measured in the flowing liquid metal. Temperature profiles have been reported by a number of workers, but these results are in poor agreement and this investigation was undertaken to measure further profiles and thus obtain reliable eddy diffusivities. Chapter 1 introduces the background to liquid metal heat transfer theory, and Chapter 2 contains a discussion of the experimental apparatus that was constructed for the purposes of this investigation. A description of this equipment he-s been published (Ref. 64) and the material is included here with the permission of the candidate's supervisor. Chapter 3 discusses the unsuccessful attempts to measure velocity profiles, and then goes on to consider appropriate values of the eddy diffusivity of momentum, based on the universal velocity profile. The data of Nikuradse are recommended after a careful study of all the available data and the author believes that this is a conclusion which will be useful to other workers in the field, who usually make an essentially random choice of eddy diffusivities."],"dc:identifier.uri":["http://hdl.handle.net/11427/14055"],"dc:language.iso":["eng"],"dc:publisher.department":["Department of Chemical Engineering"],"dc:publisher.institution":["University of Cape Town"],"dc:title":["Heat transfer to liquid metals, with observations on the effect of super-imposed free convection in turbulent flow"],"dc:type":["Doctoral Thesis"],"dc:type.qualificationlevel":["Doctoral"],"dc:type.qualificationname":["PhD"]},"updated_at":"2026-07-22T22:22:44Z"}