Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Waldir de Oliveira"'
Autor:
Waldir de Oliveira
Publikováno v:
Biblioteca Digital de Teses e Dissertações do ITAInstituto Tecnológico de AeronáuticaITA.
No presente trabalho, são discutidos alguns aspectos do escoamento em turbomáquinas radiais, com ênfase nas análises teórica e experimental de rotores centrífugos. Na análise teórica, utilizando o método das singularidades, são apresentadas
Publikováno v:
Journal of Mechanical Science and Technology. 34:2403-2422
A new methodology for the aerothermodynamic design of radial-inflow turbines used in organic Rankine cycles is presented. Initially, a fully detailed one-dimensional analysis was performed, where the real gas properties of R123 are calculated using t
Autor:
Alex Anderson Calbino da Silva, Osvaldo José Venturini, Waldir de Oliveira, Ramiro Gustavo Ramirez Camacho
Publikováno v:
Sustainable Energy Technologies and Assessments. 54:102810
Publikováno v:
Renewable Energy. 127:114-124
The present paper focuses on the parameterization of the draft tube elbow based on the initial geometry of the GAMM Francis turbine model. The goal was to obtain a draft tube geometry that improves the hydrodynamic performance. For this purpose, CFD
Autor:
Alex Anderson Calbino da Silva, Osvaldo Jose Venturini, Waldir de Oliveira, Ramiro Gustavo Ramirez Camacho
Publikováno v:
Proceedings of the 26th International Congress of Mechanical Engineering.
Publikováno v:
Journal of the Brazilian Society of Mechanical Sciences and Engineering. 39:1575-1588
This paper presents a methodology for the aerodynamic design of reversible axial-flow rotors of jet fans, usually used for ventilation of road tunnels. Due to the low hub-to-tip ratio, typical of this kind of rotors, a particular type of non-free vor
Autor:
Darwin Maestre, Ramiro Gustavo Ramirez Camacho, Tania Marie Arispe Angulo, Waldir de Oliveira
Publikováno v:
Proceedings of the 25th International Congress of Mechanical Engineering.
Autor:
Tania Marie Arispe Angulo, Ramiro Gustavo Ramirez Camacho, Edna R. da Silva, German Enrique Nino Del Rio, Waldir de Oliveira
Publikováno v:
Proceedings of the 25th International Congress of Mechanical Engineering.
Autor:
Angie L. Espinosa Sarmiento, Ramiro Gustavo Ramirez Camacho, Elkin I. Gutiérrez Velásquez, Nelson Jose Diaz Gautier, Waldir de Oliveira, Manohar Murthi
Publikováno v:
Applied Thermal Engineering. 183:116197
We describe the design and metamodel-based optimization of an ORC radial-inflow turbine for low-grade thermal energy applications using R245fa as a working fluid. Real gas properties were used in 1D and 3D CFD models, which agreed closely in predicti
Publikováno v:
Procceedings of the 24th ABCM International Congress of Mechanicl Engineering.