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Joa˜o Roberto Barbosa
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Proceedings Papers

Functional Analysis and Exergoeconomic Evaluation for the Combined Production of Electromechanical Power and Useful Heat of a Cogeneration Power Plant

Washington Orlando Irrazabal Bohorquez, Joa˜o Roberto Barbosa
Proc. ASME. GT2011, Volume 3: Controls, Diagnostics and Instrumentation; Education; Electric Power; Microturbines and Small Turbomachinery; Solar Brayton and Rankine Cycle, 557-566, June 6–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: GT2011-45055
https://doi.org/10.1115/GT2011-45055
View Paper titled, Functional Analysis and Exergoeconomic Evaluation for the Combined Production of Electromechanical Power and Useful Heat of a Cogeneration Power Plant
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Topics: Cogeneration plants, Functional analysis, Heat, Bagasse, Combustion, Electric power generation, Power stations, Biomass, Carbon dioxide, Climate change
Proceedings Papers

Influence of Variable Geometry Transients on the Gas Turbine Performance

Joa˜o Roberto Barbosa, Franco Jefferds dos Santos Silva, Jesuino Takachi Tomita, Cleverson Bringhenti
Proc. ASME. GT2011, Volume 4: Cycle Innovations; Fans and Blowers; Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Oil and Gas Applications, 273-281, June 6–10, 2011
Publisher: American Society of Mechanical Engineers
Paper No: GT2011-46565
https://doi.org/10.1115/GT2011-46565
View Paper titled, Influence of Variable Geometry Transients on the Gas Turbine Performance
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Topics: Axial flow, Gas turbines, Geometry, Transients (Dynamics)
Proceedings Papers

Hybrid Neural System for Gas Turbine Diagnostics: An Optimization Strategy

Gustavo Ravanhani Matuck, Joa˜o Roberto Barbosa, Cleverson Bringhenti, Isaias Lima
Proc. ASME. GT2010, Volume 3: Controls, Diagnostics and Instrumentation; Cycle Innovations; Marine, 475-484, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-22132
https://doi.org/10.1115/GT2010-22132
View Paper titled, Hybrid Neural System for Gas Turbine Diagnostics: An Optimization Strategy
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Topics: Gas turbines, Optimization, Reliability, Artificial neural networks, Databases, Multilayer perceptron, Noise (Sound), Safety
Proceedings Papers

Performance Study of a 1 MW Gas Turbine Using Variable Geometry Compressor and Turbine Blade Cooling

Cleverson Bringhenti, Jesuino Takachi Tomita, Joa˜o Roberto Barbosa
Proc. ASME. GT2010, Volume 3: Controls, Diagnostics and Instrumentation; Cycle Innovations; Marine, 703-710, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-22867
https://doi.org/10.1115/GT2010-22867
View Paper titled, Performance Study of a 1 MW Gas Turbine Using Variable Geometry Compressor and Turbine Blade Cooling
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Topics: Axial flow, Compressors, Cooling, Gas turbines, Geometry, Turbine blades, Turbines
Proceedings Papers

An Axial-Flow Compressor for Operation With Humid Air and Water Injection

Jesuino Takachi Tomita, Luciano Porto Bontempo, Joa˜o Roberto Barbosa
Proc. ASME. GT2010, Volume 3: Controls, Diagnostics and Instrumentation; Cycle Innovations; Marine, 721-731, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-22996
https://doi.org/10.1115/GT2010-22996
View Paper titled, An Axial-Flow Compressor for Operation With Humid Air and Water Injection
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Topics: Axial flow, Compressors, Underground injection
Proceedings Papers

Repowering: An Option for Refurbishment of Old Thermal Power Plants in Latin-American Countries

Washington Orlando Irrazabal Bohorquez, Joa˜o Roberto Barbosa, Luiz Augusto Horta Nogueira, Electo E. Silva Lora
Proc. ASME. GT2010, Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Education; Electric Power; Manufacturing Materials and Metallurgy, 825-834, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-23058
https://doi.org/10.1115/GT2010-23058
View Paper titled, Repowering: An Option for Refurbishment of Old Thermal Power Plants in Latin-American Countries
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Topics: Thermal power stations, Combustion, Boilers, Combined cycles, Gas turbines, Natural gas, Steam turbines, Power stations, Fuel oils, Rankine cycle
Proceedings Papers

Multiple Faults Detection of Gas Turbine by MLP Neural Network

Gustavo R. Matuck, Joa˜o Roberto Barbosa, Cleverson Bringhenti, Isaias Lima
Proc. ASME. GT2009, Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Controls, Diagnostics and Instrumentation; Education; Electric Power; Awards and Honors, 697-703, June 8–12, 2009
Publisher: American Society of Mechanical Engineers
Paper No: GT2009-59964
https://doi.org/10.1115/GT2009-59964
View Paper titled, Multiple Faults Detection of Gas Turbine by MLP Neural Network
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Topics: Artificial neural networks, Gas turbines, Errors, Engines, Optimization, Algorithms, Fittings, Interpolation, Maintenance, Momentum
Proceedings Papers

An Object-Oriented Parallel Finite-Volume CFD Code

Dulceneia Becker, Joa˜o Roberto Barbosa, Jesuino Takachi Tomita
Proc. ASME. GT2008, Volume 6: Turbomachinery, Parts A, B, and C, 2569-2576, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-51187
https://doi.org/10.1115/GT2008-51187
View Paper titled, An Object-Oriented Parallel Finite-Volume CFD Code
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Topics: Computational fluid dynamics, FORTRAN, Architecture, Computation, Computer programming, Engineering simulation, Flat plates, Flow (Dynamics), Nozzles, Optimization
Proceedings Papers

Effects of Turbine Tip Clearance on Gas Turbine Performance

Cleverson Bringhenti, Joa˜o Roberto Barbosa
Proc. ASME. GT2008, Volume 6: Turbomachinery, Parts A, B, and C, 1715-1721, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-50196
https://doi.org/10.1115/GT2008-50196
View Paper titled, Effects of Turbine Tip Clearance on Gas Turbine Performance
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Topics: Clearances (Engineering), Gas turbines, Turbines, Blades, Engines, Compressors, Boundary layers, Cycles, Damage, Exterior walls
Proceedings Papers

Gas Turbine Fault Detection and Isolation Using MLP Artificial Neural Network

Gustavo R. Matuck, Joa˜o Roberto Barbosa, Cleverson Bringhenti, Isaias Lima
Proc. ASME. GT2007, Volume 1: Turbo Expo 2007, 803-811, May 14–17, 2007
Publisher: American Society of Mechanical Engineers
Paper No: GT2007-27987
https://doi.org/10.1115/GT2007-27987
View Paper titled, Gas Turbine Fault Detection and Isolation Using MLP Artificial Neural Network
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Topics: Artificial neural networks, Flaw detection, Gas turbines, Engines, Computer software, Errors, Fault diagnosis, Multilayer perceptron, Simulation
Proceedings Papers

A Comparison of Loss Models Using Different Radial Distribution of Loss in an Axial Turbine Streamline Curvature Program

Genival Sena de Jesus, Joa˜o Roberto Barbosa, Kenneth W. Ramsden
Proc. ASME. GT2007, Volume 6: Turbo Expo 2007, Parts A and B, 685-692, May 14–17, 2007
Publisher: American Society of Mechanical Engineers
Paper No: GT2007-27641
https://doi.org/10.1115/GT2007-27641
View Paper titled, A Comparison of Loss Models Using Different Radial Distribution of Loss in an Axial Turbine Streamline Curvature Program
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Topics: Turbines, Blades, Axial flow, Flow (Dynamics), Computers, Physics, Reliability
Proceedings Papers

Nacelle Design for Mixed Turbofan Engines

Jesui´no Takachi Tomita, Cleverson Bringhenti, Joa˜o Roberto Barbosa, Antonio Batista de Jesus
Proc. ASME. GT2006, Volume 2: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Controls, Diagnostics and Instrumentation; Environmental and Regulatory Affairs, 201-210, May 8–11, 2006
Publisher: American Society of Mechanical Engineers
Paper No: GT2006-91212
https://doi.org/10.1115/GT2006-91212
View Paper titled, Nacelle Design for Mixed Turbofan Engines
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Topics: Computational fluid dynamics, Design, Engines, Turbofans, Flow (Dynamics), Aircraft, Boundary layers, Compressible flow, Computer software, Drag (Fluid dynamics)