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Papers by Felipe Ribolla Masetti

Research paper thumbnail of Characterization of vessel mancerability in restricted areas, low speed and transitional operation

Esta dissertação de mestrado tem como objetivo a validação do modelo numérico de manobras para na... more Esta dissertação de mestrado tem como objetivo a validação do modelo numérico de manobras para navios utilizado pelo simulador chamado SMH - Simulador Marítimo Hidroviário, que foi desenvolvido no laboratório Tanque de Provas Numérico. Para tanto foram realizados ensaios experimentais de manobras com um modelo em escala reduzida da embarcação Alpha Crucis com o objetivo de criar dados de manobra que serviram como referência para validação do modelo numérico. Foram selecionados diversos tipos de manobras com o propósito de criar uma caracterização da manobrabilidade da embarcação em baixas velocidades e regime transitório, permitindo a medição de diversas características, que permitem quantificar as capacidades de manobra da embarcação. Através de experimentos numéricos foram, então, realizadas as mesmas manobras executadas pelo modelo físico em escala reduzida, de forma a reproduzir as mesmas condições iniciais e os mesmos comandos, procurando reproduzir as manobras para validação d...

Research paper thumbnail of Assessment of New Port Operations Using Integrated Analysis: A Case Study in Port of Mucuripe (CE, Brazil)

SSRN Electronic Journal, 2016

This paper presents the analysis of Ship-to-Ship (STS) operations in both berths of the Mucuripe ... more This paper presents the analysis of Ship-to-Ship (STS) operations in both berths of the Mucuripe Port Oil Terminal (CE, Brazil). Since it is a new operation in this Terminal (that was not originally designed for), state of the art engineering tools was used to aid the analysis and to assure the safety of personnel and environment and integrity of structures and equipments. All the procedures are based on the PIANC Report n° 121-2014 detailed design phase. Initially, a hydrodynamic model was used to calculate the waves and current along all the access channel and sheltered area, for a long period (5 years). Calibration with in-loco measurements was done to assure the accuracy of the model results. A CFD model of the vessels in Ship-to-Ship configuration was used to calculate the current and wind forces in both hulls since most of the reference data is related only to single hull coefficients. Wave motions and loads are obtained using the potential software Wamit ®, with a careful analysis of the numerical mesh. An in-house mooring analysis software (Medusa) was then used to calculate the forces in the mooring lines and fenders for the ship-to-ship configuration, subjected to a large range of wind, waves, water level and current combinations. This software is fully configurable and can even model Ship-to-Ship vessels arrangements. It is also possible to perform statistical analysis of the results, indicating the availability of each berth for the STS operation. Different mooring layouts were tested. The nautical maneuver was performed and analyzed by real-time numerical simulations, with the command of the Mucuripe Port maritime pilots. Several scenarios of wind/waves/current were tested in the full-mission maneuvering simulator of the TPN Laboratory. The simulations intended to verify if the space to turn the vessel was adequate, considering that the other STS vessel was already at the berth. Furthermore, the bollard pull and the number of tugboats could also be tested, considering the risks associated to the STS operation. A novel procedure of Fast-Time simulation was applied to better define the required bollard pull, repeating the maneuvers executed by the pilots under a larger number of environmental conditions, using the computer to control the trajectory. An optimization algorithm associated with statistical analysis was the used to verify the tug boats bollard pull required for each case. If hydro/meteo information and prediction system is installed in the port, these results could be used to optimize the allocation of the tugboats in the port. As a final result of the analysis, some restrictions were imposed on the STS operation when long-period waves reach the port since they cause large motions in the vessels and increase the load on the mooring lines.

Research paper thumbnail of Validation of a Modular Mathematical Model for Low-Speed Maneuvering Using Small Scale Tests With an Oceanographic Research Vessel

Volume 7: Ocean Engineering, 2015

This paper presents small scale low-speed maneuvering tests with an oceanographic research vessel... more This paper presents small scale low-speed maneuvering tests with an oceanographic research vessel model. The purpose of the tests is to validate the mathematical model of the real-time ship simulator for low-speed maneuvering developed by the University of São Paulo. The tests are intended to verify the behavior of the vessel and the model under transient and low-speed tests.

Research paper thumbnail of Deep and Shallow Water Low-Speed Maneuvering Tests: Comparison Between Experimental and Simulation Results

Volume 7: Ocean Engineering, 2016

Research paper thumbnail of Deep and Shallow Water Low-Speed Maneuvering Tests: Comparison Between Experimental and Simulation Results

Volume 7: Ocean Engineering, 2016

Research paper thumbnail of Caracterização da manobrabilidade de embarcações em áreas restritas, baixa velocidade e operação em regime transitório

À minha família, por ter me apoiado e possibilitado minha trajetória até aqui, me incentivando e ... more À minha família, por ter me apoiado e possibilitado minha trajetória até aqui, me incentivando e provocando para que sempre me mantivesse em evolução. À Paula, por me acompanhar nos últimos anos. Ao meu orientador, professor Dr. Eduardo Aoun Tannuri, pela orientação durante o mestrado e anteriormente a este, inclusive. Ao Isaias Masetti, Kazuo Nishimoto, Carlos H. Fucatu e toda a equipe da Petrobrás e da USP que tantas vezes acreditaram no projeto do TPN e do simulador e que acabaram por viabilizar este trabalho e desenvolver tecnologia nacional. Aos amigos que auxiliaram nesse processo, especialmente ao Pedro Cardozo de Mello, pelo auxílio durante a execução dos ensaios em escala, e ao Felipe Rateiro, por diversos aconselhamentos e apoio. À Technomar por permitir a dedicação e consequente realização deste trabalho. À Petrobras, pelo uso do simulador SMH. À FAPESP, pela construção do modelo em escala reduzida. Ao Instituto Oceanográfico da USP, pelas informações sobre a embarcação. Ao laboratório FCTH, pela disponibilidade do tanque de provas para os ensaios experimentais.

Research paper thumbnail of Characterization of vessel mancerability in restricted areas, low speed and transitional operation

Esta dissertação de mestrado tem como objetivo a validação do modelo numérico de manobras para na... more Esta dissertação de mestrado tem como objetivo a validação do modelo numérico de manobras para navios utilizado pelo simulador chamado SMH - Simulador Marítimo Hidroviário, que foi desenvolvido no laboratório Tanque de Provas Numérico. Para tanto foram realizados ensaios experimentais de manobras com um modelo em escala reduzida da embarcação Alpha Crucis com o objetivo de criar dados de manobra que serviram como referência para validação do modelo numérico. Foram selecionados diversos tipos de manobras com o propósito de criar uma caracterização da manobrabilidade da embarcação em baixas velocidades e regime transitório, permitindo a medição de diversas características, que permitem quantificar as capacidades de manobra da embarcação. Através de experimentos numéricos foram, então, realizadas as mesmas manobras executadas pelo modelo físico em escala reduzida, de forma a reproduzir as mesmas condições iniciais e os mesmos comandos, procurando reproduzir as manobras para validação d...

Research paper thumbnail of Assessment of New Port Operations Using Integrated Analysis: A Case Study in Port of Mucuripe (CE, Brazil)

SSRN Electronic Journal, 2016

This paper presents the analysis of Ship-to-Ship (STS) operations in both berths of the Mucuripe ... more This paper presents the analysis of Ship-to-Ship (STS) operations in both berths of the Mucuripe Port Oil Terminal (CE, Brazil). Since it is a new operation in this Terminal (that was not originally designed for), state of the art engineering tools was used to aid the analysis and to assure the safety of personnel and environment and integrity of structures and equipments. All the procedures are based on the PIANC Report n° 121-2014 detailed design phase. Initially, a hydrodynamic model was used to calculate the waves and current along all the access channel and sheltered area, for a long period (5 years). Calibration with in-loco measurements was done to assure the accuracy of the model results. A CFD model of the vessels in Ship-to-Ship configuration was used to calculate the current and wind forces in both hulls since most of the reference data is related only to single hull coefficients. Wave motions and loads are obtained using the potential software Wamit ®, with a careful analysis of the numerical mesh. An in-house mooring analysis software (Medusa) was then used to calculate the forces in the mooring lines and fenders for the ship-to-ship configuration, subjected to a large range of wind, waves, water level and current combinations. This software is fully configurable and can even model Ship-to-Ship vessels arrangements. It is also possible to perform statistical analysis of the results, indicating the availability of each berth for the STS operation. Different mooring layouts were tested. The nautical maneuver was performed and analyzed by real-time numerical simulations, with the command of the Mucuripe Port maritime pilots. Several scenarios of wind/waves/current were tested in the full-mission maneuvering simulator of the TPN Laboratory. The simulations intended to verify if the space to turn the vessel was adequate, considering that the other STS vessel was already at the berth. Furthermore, the bollard pull and the number of tugboats could also be tested, considering the risks associated to the STS operation. A novel procedure of Fast-Time simulation was applied to better define the required bollard pull, repeating the maneuvers executed by the pilots under a larger number of environmental conditions, using the computer to control the trajectory. An optimization algorithm associated with statistical analysis was the used to verify the tug boats bollard pull required for each case. If hydro/meteo information and prediction system is installed in the port, these results could be used to optimize the allocation of the tugboats in the port. As a final result of the analysis, some restrictions were imposed on the STS operation when long-period waves reach the port since they cause large motions in the vessels and increase the load on the mooring lines.

Research paper thumbnail of Validation of a Modular Mathematical Model for Low-Speed Maneuvering Using Small Scale Tests With an Oceanographic Research Vessel

Volume 7: Ocean Engineering, 2015

This paper presents small scale low-speed maneuvering tests with an oceanographic research vessel... more This paper presents small scale low-speed maneuvering tests with an oceanographic research vessel model. The purpose of the tests is to validate the mathematical model of the real-time ship simulator for low-speed maneuvering developed by the University of São Paulo. The tests are intended to verify the behavior of the vessel and the model under transient and low-speed tests.

Research paper thumbnail of Deep and Shallow Water Low-Speed Maneuvering Tests: Comparison Between Experimental and Simulation Results

Volume 7: Ocean Engineering, 2016

Research paper thumbnail of Deep and Shallow Water Low-Speed Maneuvering Tests: Comparison Between Experimental and Simulation Results

Volume 7: Ocean Engineering, 2016

Research paper thumbnail of Caracterização da manobrabilidade de embarcações em áreas restritas, baixa velocidade e operação em regime transitório

À minha família, por ter me apoiado e possibilitado minha trajetória até aqui, me incentivando e ... more À minha família, por ter me apoiado e possibilitado minha trajetória até aqui, me incentivando e provocando para que sempre me mantivesse em evolução. À Paula, por me acompanhar nos últimos anos. Ao meu orientador, professor Dr. Eduardo Aoun Tannuri, pela orientação durante o mestrado e anteriormente a este, inclusive. Ao Isaias Masetti, Kazuo Nishimoto, Carlos H. Fucatu e toda a equipe da Petrobrás e da USP que tantas vezes acreditaram no projeto do TPN e do simulador e que acabaram por viabilizar este trabalho e desenvolver tecnologia nacional. Aos amigos que auxiliaram nesse processo, especialmente ao Pedro Cardozo de Mello, pelo auxílio durante a execução dos ensaios em escala, e ao Felipe Rateiro, por diversos aconselhamentos e apoio. À Technomar por permitir a dedicação e consequente realização deste trabalho. À Petrobras, pelo uso do simulador SMH. À FAPESP, pela construção do modelo em escala reduzida. Ao Instituto Oceanográfico da USP, pelas informações sobre a embarcação. Ao laboratório FCTH, pela disponibilidade do tanque de provas para os ensaios experimentais.