Ocean Engineering, Engineering, Mechanical Engineering, Renewable Energy, Sustainability and the Environment
5
Scopus Publications
32
Scholar Citations
3
Scholar h-index
1
Scholar i10-index
Scopus Publications
Marine Accidents in the Brazilian Amazon: The Problems and Challenges in the Initiatives for Their Prevention Focused on Passenger Ships Jassiel V. H. Fontes, Paulo R. R. de Almeida, Harlysson W. S. Maia, Irving D. Hernández, Claudio A. Rodríguez, et al. Sustainability Switzerland, 2023 The Brazilian Amazon is part of one of the largest river systems in the world, in which the transport of cargo and passengers is commonplace. However, several accidents still occur to passenger ships, causing fatalities. Transportation occurs commonly in remote regions, where there are transport inequalities, and emergency assistance is hard to find. This can affect sustainability in communities with considerable levels of economic and social vulnerability. More information is needed about accidents involving inland transport in the Amazon, to identify the threats to ships and propose strategies for accident prevention. This paper addresses the main problems that long-distance passenger ships face in the Brazilian Amazon, presenting an integrated framework towards accident prevention. First, the present situation is characterized in terms of ship description, spatial distribution, and regulations that are applicable. Next, possible causes of passenger ship accidents are discussed, including topics of concern that should be considered in the Amazon waterways. Finally, measures to help minimize passenger ship accidents are proposed, and the social relevance is discussed. It was found that accidents in the Amazon are due to a combination of human and environmental factors. Stakeholders should strengthen the technical and legal training of ship operators. The use of new technologies for navigational aid and necessary maintenance of ships is suggested. Marine accident prevention initiatives should consider local conditions, such as environmental preservation, cultural respect, and difficulties related to navigation through the complex riverine system of the Amazon region.
Computational fluid dynamics applied to river boat hull optimization Harlysson W. S. Maia, Said Mounsif, Jassiel V. Hernández-Fontes, Rodolfo Silva Marine Technology Society Journal, 2021 This paper extends the work of Maia and Said (“Analysis for Resistance Reduction of an Amazon School Boat through Hull Shape Modification Utilizing a CFD Tool,” 2019), proposing the optimization of a school boat hull using genetic algorithms and computational fluid dynamics (CDF) simulations. The study examines a school boat used for the transportation of children to schools in riverine communities of the Brazilian Amazon. The optimization was focused on reducing the hydrodynamic hull resistance by modifying the hull lines, using the NSGA-II (non-dominated sorting genetic algorithm II) algorithm in the CAD (computer aided design) CAESES environment. The objective of the study was to reduce the resistance coefficients: C wp (wave profile) and C wp trans (transverse wave profile), thus reducing the total resistance coefficient (C t) and the generated wave amplitude. Pressure distributions and flow lines were then evaluated to obtain an optimal modified hull with reduced wave emission (lower wave resistance) and, consequently, lower forward resistance. The proposed methodology resulted in a maximum reduction of 5% in the total resistance coefficient C t and in the identification of a trend of geometric variation of the hull for investigation in further studies.
Analysis for resistance reduction of an amazon school boat through hull shape modification utilizing a CFD tool Harlysson W. S. Maia, Mounsif Said Marine Technology Society Journal, 2019 The waterway system of the Brazilian Amazonian region is one of the most complex in the world, being of vital importance for the daily circulation of passengers and cargo, and in this scenario, the FNDE (National Fund for Development of Education) provided the implementation of school boats for the transportation of riverine students to their classrooms. However, one of the school boat models presented operational inefficiency, as well as increased fuel consumption and travel duration. This work investigates the hydrodynamic causes of this inefficiency by analyzing dynamic pressure distributions on the hull, streamlines, and wave train generation and identifying hull shape regions that would hinder the flow. Through Computational Fluid Dynamics (CFD) simulations and analysis, a hull shape modification is proposed in order to reduce the resistance to forward motion and a comparison is made with the results of another research report, using the same hull geometry and speed range in simulations performed in other CFD software. Due to the hydrodynamic analysis, it can be inferred that the prototype hull form is inappropriate for the proposed operation regime in this project, and an agreement on the resistance coefficient reduction rates can be observed between use of both software, where a maximum total resistance coefficient reduction of 25.06% is achieved.
Finite volume method for the computation of fluid flow with moving grid for fluid-structure interactions American Society of Mechanical Engineers Aerospace Division Publication AD, 1997
A FINITE VOLUME METHOD FOR THE COMPUTATION OF FLUID FLOW WITH MOVING GRID FOR FLUID-STRUCTURE INTERACTIONS S. Mounsif, A. L. Amarante Mesquita ASME International Mechanical Engineering Congress and Exposition Proceedings Imece, 1997 A finite-volume numerical method is presented for the solution of the two-dimensional incompressible, unsteady Navier-Stokes equations in general moving curvilinear co-ordinates. The method employs the semi-strong conservation form of the governing equations with pressure and physical contravariant velocity components as dependent variables. The k-ε model is utilised to describe the turbulent flow process. The SIMPLE algorithm is used to handle the pressure-velocity coupling. Results for the calculation of the fluctuating flow past an airfoil are compared with the available experimental data. As a simulation of fluid-structure interaction, the calculation of the unsteady flow-field around a stay-vane hydrofoil in forced and free vibration is presented. The numerical results obtained in this work show very good agreement with experimental observations.
RECENT SCHOLAR PUBLICATIONS
Metodologia de avaliação através de uma pesquisa Survey sobre o grau de satisfação dos usuários em um terminal hidroviário de passageiros: uma aplicação no Terminal de Camará … GOG Junior, JWG de Souza, MVR da Silva Junior, M Said Brazilian Journal of Development 9 (12), 32100-32121 , 2023 2023
Marine accidents in the brazilian amazon: The problems and challenges in the initiatives for their prevention focused on passenger ships JVH Fontes, PRR de Almeida, HWS Maia, ID Hernández, CA Rodríguez, ... Sustainability 15 (1), 328 , 2022 2022 Citations: 21
Computational fluid dynamics applied to river boat hull optimization HWS Maia, S Mounsif, JV Hernández-Fontes, R Silva Marine Technology Society Journal 55 (5), 94-108 , 2021 2021 Citations: 5
OTIMIZAÇÃO HIDRODINÂMICA DO CASCO DE UMA LANCHA ESCOLAR AMAZÔNICA ATRAVÉS DE ALGORITMO GENÉTICO PARA REDUÇÃO DE RESISTÊNCIA EM AMBIENTE CFD HWS MAIA, M Said Terra do Mar Doce 1 (1ED), 243-273 , 2020 2020
Analysis for resistance reduction of an Amazon school boat through hull shape modification utilizing a CFD tool HWS Maia, M Said Marine Technology Society Journal 53 (4), 57-67 , 2019 2019 Citations: 6
MODELOS DE TURBULÊNCIA EM SIMULAÇÃO DE ESCOAMENTO DE AR EM AMBIENTES INTERNOS TRIDIMENSIONAIS S MOUNSIF, AH OLIVEIRA FILHO V Congresso Nacional de Engenharia Mecânica - CONEM2008 1 , 2008 2008
AVALIAÇÃO DO AMBIENTE TÉRMICO EM USINA DE GERAÇÃO DE ENERGIA TERMO-ELÉTRICA JE CORRÊA, CUS LIMA, AH OLIVEIRA FILHO, S MOUNSIF V Congresso Nacional de Engenharia Mecânica - CONEM2008 1 , 2008 2008
OPTIMIZATION OF THERMODYNAMIC CYCLES USED IN THERMAL POWER PLANTS S MOUNSIF, S LIMA FILHO, FA CUNHA 10th Brazilian Congress of Thermal Engineering and Sciences, 2004, ENCIT2004 1 , 2004 2004
SIMULAÇÃO DA COMBUSTÃO DE CARVÃO PULVERIZADO NUMA CÂMARA CICLÔNICA S MOUNSIF, FA CUNHA, S LIMA FILHO Congresso Nacional de Engenharia Mecânica - CONEM2004 1, 1-10 , 2004 2004
SIMULAÇÃO NUMÉRICA DA COMBUSTÃO DE CARVÃO PULVERIZADO UTILIZANDO O SOFTWARE COMERCIAL FLUENT S MOUNSIF, FA CUNHA, S LIMA FILHO Congresso Nacional de Engenharia Mecânica - CONEM2004 1 , 2004 2004
NUMERICAL INVESTIGATION OF FLUID ELASTIC STABILITY S MOUNSIF, NS SOEIRO COBEM, 2002, João Pessoa 1 , 2002 2002
A Finite Volume Method for the Computation of Fluid Flow With Moving Grid for Fluid-Structure Interactions S Mounsif, ALA Mesquita ASME International Mechanical Engineering Congress and Exposition 26751, 57-65 , 1997 1997
AN UNSTEADY NUMERICAL SIMULATION OF AN OSCILLATING AIRFOIL WITH STRUCTURAL COUPLING S MOUNSIF COBEM, 1997, BAURU. COBEM 1997 1 , 1997 1997
Modélisation d'écoulements instationnaires autour de géométries mobiles: application aux interactions fluide-structure S Mounsif Grenoble INPG , 1992 1992
MOST CITED SCHOLAR PUBLICATIONS
Marine accidents in the brazilian amazon: The problems and challenges in the initiatives for their prevention focused on passenger ships JVH Fontes, PRR de Almeida, HWS Maia, ID Hernández, CA Rodríguez, ... Sustainability 15 (1), 328 , 2022 2022 Citations: 21
Analysis for resistance reduction of an Amazon school boat through hull shape modification utilizing a CFD tool HWS Maia, M Said Marine Technology Society Journal 53 (4), 57-67 , 2019 2019 Citations: 6
Computational fluid dynamics applied to river boat hull optimization HWS Maia, S Mounsif, JV Hernández-Fontes, R Silva Marine Technology Society Journal 55 (5), 94-108 , 2021 2021 Citations: 5
Metodologia de avaliação através de uma pesquisa Survey sobre o grau de satisfação dos usuários em um terminal hidroviário de passageiros: uma aplicação no Terminal de Camará … GOG Junior, JWG de Souza, MVR da Silva Junior, M Said Brazilian Journal of Development 9 (12), 32100-32121 , 2023 2023
OTIMIZAÇÃO HIDRODINÂMICA DO CASCO DE UMA LANCHA ESCOLAR AMAZÔNICA ATRAVÉS DE ALGORITMO GENÉTICO PARA REDUÇÃO DE RESISTÊNCIA EM AMBIENTE CFD HWS MAIA, M Said Terra do Mar Doce 1 (1ED), 243-273 , 2020 2020
MODELOS DE TURBULÊNCIA EM SIMULAÇÃO DE ESCOAMENTO DE AR EM AMBIENTES INTERNOS TRIDIMENSIONAIS S MOUNSIF, AH OLIVEIRA FILHO V Congresso Nacional de Engenharia Mecânica - CONEM2008 1 , 2008 2008
AVALIAÇÃO DO AMBIENTE TÉRMICO EM USINA DE GERAÇÃO DE ENERGIA TERMO-ELÉTRICA JE CORRÊA, CUS LIMA, AH OLIVEIRA FILHO, S MOUNSIF V Congresso Nacional de Engenharia Mecânica - CONEM2008 1 , 2008 2008
OPTIMIZATION OF THERMODYNAMIC CYCLES USED IN THERMAL POWER PLANTS S MOUNSIF, S LIMA FILHO, FA CUNHA 10th Brazilian Congress of Thermal Engineering and Sciences, 2004, ENCIT2004 1 , 2004 2004
SIMULAÇÃO DA COMBUSTÃO DE CARVÃO PULVERIZADO NUMA CÂMARA CICLÔNICA S MOUNSIF, FA CUNHA, S LIMA FILHO Congresso Nacional de Engenharia Mecânica - CONEM2004 1, 1-10 , 2004 2004
SIMULAÇÃO NUMÉRICA DA COMBUSTÃO DE CARVÃO PULVERIZADO UTILIZANDO O SOFTWARE COMERCIAL FLUENT S MOUNSIF, FA CUNHA, S LIMA FILHO Congresso Nacional de Engenharia Mecânica - CONEM2004 1 , 2004 2004
NUMERICAL INVESTIGATION OF FLUID ELASTIC STABILITY S MOUNSIF, NS SOEIRO COBEM, 2002, João Pessoa 1 , 2002 2002
A Finite Volume Method for the Computation of Fluid Flow With Moving Grid for Fluid-Structure Interactions S Mounsif, ALA Mesquita ASME International Mechanical Engineering Congress and Exposition 26751, 57-65 , 1997 1997
AN UNSTEADY NUMERICAL SIMULATION OF AN OSCILLATING AIRFOIL WITH STRUCTURAL COUPLING S MOUNSIF COBEM, 1997, BAURU. COBEM 1997 1 , 1997 1997
Modélisation d'écoulements instationnaires autour de géométries mobiles: application aux interactions fluide-structure S Mounsif Grenoble INPG , 1992 1992
