{"id":{"repo_id":"brazil-uerj","oai_identifier":"oai:pantheon.ufrj.br:11422/6942"},"canonical_url":"https://search.dev.ndltd.org/etd/brazil-uerj/oai:pantheon.ufrj.br:11422/6942","repository":{"repo_id":"brazil-uerj","name":"Brazil UERJ","base_url":"https://pantheon.ufrj.br/oai/request"},"display":{"title":"Modelo numérico de efeitos hidrodinâmicos em escoamentos internos e externos","abstract":"This work develops a numerical model for external and internal flows to a ship under regular waves. The numerical model consists of the coupling of two methods with different nature, which were evaluated independently in a first stage. The first one is the time domain method based on the panel method and potential theory to calculate the ship dynamic in regular waves; here the formulation of ship motion equations considers nonlinear terms and the Froude-Krilov force is extrapolated to the instantaneous free surface. The time domain method was evaluated in a simple case of a box shape under transversal and longitudinal waves, analyzing the roll, heave and pitch motion amplitudes. The other method was a particles method based on the Euler equations, specifically the called I-MPS (Improved Moving Particle Semi-implicit) to study the internal flow with complex free surfaces. The I-MPS includes a new formulation for the boundary condition on the walls; several cases of internal flow, dambreak, sloshing and sloshing with mass transfer in a 2D box were studied and compared with experimental results, showing good results.","abstract_html":"This work develops a numerical model for external and internal flows to a ship under regular waves. The numerical model consists of the coupling of two methods with different nature, which were evaluated independently in a first stage. The first one is the time domain method based on the panel method and potential theory to calculate the ship dynamic in regular waves; here the formulation of ship motion equations considers nonlinear terms and the Froude-Krilov force is extrapolated to the instantaneous free surface. The time domain method was evaluated in a simple case of a box shape under transversal and longitudinal waves, analyzing the roll, heave and pitch motion amplitudes. The other method was a particles method based on the Euler equations, specifically the called I-MPS (Improved Moving Particle Semi-implicit) to study the internal flow with complex free surfaces. The I-MPS includes a new formulation for the boundary condition on the walls; several cases of internal flow, dambreak, sloshing and sloshing with mass transfer in a 2D box were studied and compared with experimental results, showing good results.","abstract_has_math":false,"creators":["Ahumada Fonfach, José Miguel"],"institution":"Universidade Federal do Rio de Janeiro","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Neves, Marcelo de Almeida Santos"],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-10","date_published":"2017-10","updated_at":"2026-07-24T01:16:24Z","subjects":["Engenharia oceânica","Análise não-linear","Escoamento interno"],"languages":["por"],"rights":["Acesso Aberto"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11422/6942","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Neves, Marcelo de Almeida Santos"]},{"key":"dc:creator","label":"Author","values":["Ahumada Fonfach, José Miguel"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2019-04-03T15:40:24Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2026-05-16T03:02:12Z"]},{"key":"dc:date.issued","label":"Date","values":["2017-10"]},{"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":["Tese"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engenharia oceânica","Análise não-linear","Escoamento interno"]}]},{"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/11422/6942"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This work develops a numerical model for external and internal flows to a ship under regular waves. The numerical model consists of the coupling of two methods with different nature, which were evaluated independently in a first stage. The first one is the time domain method based on the panel method and potential theory to calculate the ship dynamic in regular waves; here the formulation of ship motion equations considers nonlinear terms and the Froude-Krilov force is extrapolated to the instantaneous free surface. The time domain method was evaluated in a simple case of a box shape under transversal and longitudinal waves, analyzing the roll, heave and pitch motion amplitudes. The other method was a particles method based on the Euler equations, specifically the called I-MPS (Improved Moving Particle Semi-implicit) to study the internal flow with complex free surfaces. The I-MPS includes a new formulation for the boundary condition on the walls; several cases of internal flow, dambreak, sloshing and sloshing with mass transfer in a 2D box were studied and compared with experimental results, showing good results."]},{"key":"dc:title","label":"Title","values":["Modelo numérico de efeitos hidrodinâmicos em escoamentos internos e externos"]}]}],"canonical_facts":{"dc:contributor.advisor":["Neves, Marcelo de Almeida Santos"],"dc:creator":["Ahumada Fonfach, José Miguel"],"dc:date.accessioned":["2019-04-03T15:40:24Z"],"dc:date.available":["2026-05-16T03:02:12Z"],"dc:date.issued":["2017-10"],"dc:description.abstract":["This work develops a numerical model for external and internal flows to a ship under regular waves. The numerical model consists of the coupling of two methods with different nature, which were evaluated independently in a first stage. The first one is the time domain method based on the panel method and potential theory to calculate the ship dynamic in regular waves; here the formulation of ship motion equations considers nonlinear terms and the Froude-Krilov force is extrapolated to the instantaneous free surface. The time domain method was evaluated in a simple case of a box shape under transversal and longitudinal waves, analyzing the roll, heave and pitch motion amplitudes. The other method was a particles method based on the Euler equations, specifically the called I-MPS (Improved Moving Particle Semi-implicit) to study the internal flow with complex free surfaces. The I-MPS includes a new formulation for the boundary condition on the walls; several cases of internal flow, dambreak, sloshing and sloshing with mass transfer in a 2D box were studied and compared with experimental results, showing good results."],"dc:identifier.uri":["http://hdl.handle.net/11422/6942"],"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":["Engenharia oceânica","Análise não-linear","Escoamento interno"],"dc:title":["Modelo numérico de efeitos hidrodinâmicos em escoamentos internos e externos"],"dc:type":["Tese"]},"updated_at":"2026-07-24T01:16:24Z"}