{"id":{"repo_id":"brazil-uerj","oai_identifier":"oai:pantheon.ufrj.br:11422/5985"},"canonical_url":"https://search.dev.ndltd.org/etd/brazil-uerj/oai:pantheon.ufrj.br:11422/5985","repository":{"repo_id":"brazil-uerj","name":"Brazil UERJ","base_url":"https://pantheon.ufrj.br/oai/request"},"display":{"title":"Uma equação para o cálculo do atrito entre fases em escoamentos turbulentos estratificados em tubulações circulares","abstract":"Multiphase flows are present in several areas of the industry. Modeling these types of flow are, therefore, imperative to engineering. In literature, there are several methods to calculate friction pressure losses in such processes. These methods involve friction factors, parameters that depend on flow conditions and fluid property. The interfacial friction factor represents the friction tension generated from the interaction between fluids, and it is currently calculated through empirical correlations that are not able to describe the physical phenomenon properly. Hence, the main goal of this work was to introduce a new correlation for the interfacial friction factor between gas and liquid for stratified flows, based on physical considerations and that can be applied in a wider range of flow conditions. Comparisons of the proposed model with experimental results showed good agreement.","abstract_html":"Multiphase flows are present in several areas of the industry. Modeling these types of flow are, therefore, imperative to engineering. In literature, there are several methods to calculate friction pressure losses in such processes. These methods involve friction factors, parameters that depend on flow conditions and fluid property. The interfacial friction factor represents the friction tension generated from the interaction between fluids, and it is currently calculated through empirical correlations that are not able to describe the physical phenomenon properly. Hence, the main goal of this work was to introduce a new correlation for the interfacial friction factor between gas and liquid for stratified flows, based on physical considerations and that can be applied in a wider range of flow conditions. Comparisons of the proposed model with experimental results showed good agreement.","abstract_has_math":false,"creators":["Silva, Paula Thamy Costantini"],"institution":"Universidade Federal do Rio de Janeiro","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Cruz, Daniel Onofre de Almeida"],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-08","date_published":"2017-08","updated_at":"2026-07-24T01:16:18Z","subjects":["Tubulações","Escoamento multifásico"],"languages":["por"],"rights":["Acesso Aberto"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11422/5985","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Cruz, Daniel Onofre de Almeida"]},{"key":"dc:creator","label":"Author","values":["Silva, Paula Thamy Costantini"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2018-12-14T14:47:10Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2026-05-16T03:03:24Z"]},{"key":"dc:date.issued","label":"Date","values":["2017-08"]},{"key":"dc:publisher","label":"Institution","values":["Universidade Federal do Rio de Janeiro"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"]},{"key":"dc:type","label":"Dc Type","values":["Dissertação"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Tubulações","Escoamento multifásico"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["por"]},{"key":"dc:rights","label":"Dc Rights","values":["Acesso Aberto"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11422/5985"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Multiphase flows are present in several areas of the industry. Modeling these types of flow are, therefore, imperative to engineering. In literature, there are several methods to calculate friction pressure losses in such processes. These methods involve friction factors, parameters that depend on flow conditions and fluid property. The interfacial friction factor represents the friction tension generated from the interaction between fluids, and it is currently calculated through empirical correlations that are not able to describe the physical phenomenon properly. Hence, the main goal of this work was to introduce a new correlation for the interfacial friction factor between gas and liquid for stratified flows, based on physical considerations and that can be applied in a wider range of flow conditions. Comparisons of the proposed model with experimental results showed good agreement."]},{"key":"dc:title","label":"Title","values":["Uma equação para o cálculo do atrito entre fases em escoamentos turbulentos estratificados em tubulações circulares"]}]}],"canonical_facts":{"dc:contributor.advisor":["Cruz, Daniel Onofre de Almeida"],"dc:creator":["Silva, Paula Thamy Costantini"],"dc:date.accessioned":["2018-12-14T14:47:10Z"],"dc:date.available":["2026-05-16T03:03:24Z"],"dc:date.issued":["2017-08"],"dc:description.abstract":["Multiphase flows are present in several areas of the industry. Modeling these types of flow are, therefore, imperative to engineering. In literature, there are several methods to calculate friction pressure losses in such processes. These methods involve friction factors, parameters that depend on flow conditions and fluid property. The interfacial friction factor represents the friction tension generated from the interaction between fluids, and it is currently calculated through empirical correlations that are not able to describe the physical phenomenon properly. Hence, the main goal of this work was to introduce a new correlation for the interfacial friction factor between gas and liquid for stratified flows, based on physical considerations and that can be applied in a wider range of flow conditions. Comparisons of the proposed model with experimental results showed good agreement."],"dc:identifier.uri":["http://hdl.handle.net/11422/5985"],"dc:language":["por"],"dc:publisher":["Universidade Federal do Rio de Janeiro"],"dc:publisher.department":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"],"dc:rights":["Acesso Aberto"],"dc:subject":["Tubulações","Escoamento multifásico"],"dc:title":["Uma equação para o cálculo do atrito entre fases em escoamentos turbulentos estratificados em tubulações circulares"],"dc:type":["Dissertação"]},"updated_at":"2026-07-24T01:16:18Z"}