A5023159609- Nanofluid Flow and Heat Transfer
- Advanced machining processes and optimization
- Heat Transfer Mechanisms
- Metal Alloys Wear and Properties
- Heat Transfer and Optimization
- Aerodynamics and Fluid Dynamics Research
- Fluid Dynamics and Turbulent Flows
- Heat Transfer and Boiling Studies
- Wind Energy Research and Development
- Radiative Heat Transfer Studies
- Engineering Technology and Methodologies
- Hydrogen embrittlement and corrosion behaviors in metals
- Brake Systems and Friction Analysis
- Advanced Measurement and Metrology Techniques
- Solar Thermal and Photovoltaic Systems
- Wind and Air Flow Studies
- Metallurgy and Material Forming
- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Microstructure and Mechanical Properties of Steels
- Adhesion, Friction, and Surface Interactions
- Advanced Aircraft Design and Technologies
- Mechanical and Thermal Properties Analysis
- Heat and Mass Transfer in Porous Media
- Sports Dynamics and Biomechanics
- Surface Treatment and Coatings
Universidade Federal de Itajubá
2009-2024
Universidade Federal de Viçosa
2015-2016
Universidad de Costa Rica
2015
American Institute of Aeronautics and Astronautics
2015
Universidade Federal da Bahia
2009
Theoretical framework: A biodiesel fuel is made from long-chain fatty acids derived vegetable oil or animal fat. Similarities between physical-chemical characteristics of diesel and make their mixture feasible. Environmental benefits achieved by using biofuels to drive machines has increased contribution in energetic matrixes. Objective: The aim this research produce soybean sunflower the laboratory a transesterification reaction examine specifications for utilization compression ignition...
Objective: The objective of this study is to investigate the thermal behavior coated cutting tools in industrial turning processes, aiming enhance machining efficiency and prolong tool lifespan. Theoretical Framework: grounded concepts heat transfer, thermally insulating coatings, their impact on performance. Key theories models include conductivity, insulation, dissipation mechanisms. Methodology: research employs numerical simulation using COMSOL® Multiphysics package model transient...
Turbulent natural convection of air that happens into inner square cavity with localized heating from horizontal bottom surface has been numerically investigated. Localized is simulated by a centrally located heat source on the wall, and two values dimensionless length ? are considered in present work. Solutions obtained for several Rayleigh numbers Prandtl number Pr = 0.70. The top thermally insulated vertical surfaces assumed to be cold isothermal whereas wall isothermally heated. In this...
This study aims at assessing the degree of susceptibility to intergranular corrosion UNS S31803 duplex stainless steel and 0.4% Mo austenitic through double-loop electrochemical potentiodynamic reactivation (DL-EPR) test. Both steels were subjected isothermal treatments 650ºC 900ºC in order compare effect temperature on respective degrees sensitization. It was observed that presented a higher sensitization and, consequently, greater process when compared two temperatures studied. also that,...
This paper looks into the aerodynamic behavior of an S809 airfoil commonly utilized in wind turbines. Tests were carried out to measure drag coefficient profiles under high speed flows up 14 m/s, with Reynolds numbers ranging between approximately Re = 11,400 and 135,400. The prototype was fabricated on a fused deposition modeling machine ABS Plus thermoplastic. Several tests tunnel. Angles attack from 0° 20° tested increments two degrees both clockwise (leading edge above trailing edge)...
Objective: This study aims to compare the efficiency of Naca 4412 and Clark Y airfoil profiles for small-diameter wind turbines using Solidworks® modeling, 3D printing, tunnel testing, computational simulation. The hypothesis posits that will be more efficient. Theoretical Framework: Wind convert kinetic energy into electrical energy, with rotor being responsible converting mechanical which is subsequently converted by generator. Studies highlight importance optimizing aerodynamics blades...
Theoretical framework: This study presents a comprehensive investigation into three-dimensional natural convection within confined cavity filled with an alumina-water nanofluid. Objective: Utilizing numerical simulations, we explore the influence of nanoparticles' volume fraction and Rayleigh number () on entropy generation, heat transfer efficiency, fluid behavior water tank. Method: The delves conservation equations governing mass, momentum, energy context laminar convection. It focuses...
<title>Abstract</title> This study proposes a method to optimize the flotation parameters of quartz for concentrating iron ore into pellets. With reduction in mineral deposits with high contents and increasing demand low contaminants steel production, it is important evaluate effects that influence performance. Seventeen bench tests were conducted using Central Composite Design (CCD) identify process response conditions. Optimization Generalized Reduced Gradient (GRG) algorithm resulted...
Heat transfer by laminar natural convection in confined spaces is of great interest the engineering field. The flow that occurs a cavity an important physical phenomenon must be investigated, as it can beapplied to projects electronic components electrical circuits with heatdissipators. objective numerical model consists evaluating theamount heat transferred fins and also visualizing velocity field isothermal lines fluid (air) solid (aluminum) domains. surface component kept at high uniform...
The objective of this work was to analyze the brake system prototype developed by UFV, using sensors and software as a source obtaining data. low-profile off-road must have high working capacity on low-lift, sloping irregular terrain, always complying with SAE Brazil's safety regulations regulations. methodology used determination theoretical maximum temperatures characterization thermal braking energies experimental method. presented results confirm that pre-established conditions were...
El objetivo de este trabajo fue caracterizar el rendimiento térmico un generador vapor con la intención reducir desperdicio combustible y los costos involucrados. potencial económico social país tiene gran relación su reserva energética manera como es explotada. desarrollo provoca impactos ambientales significativos, siendo que mayoría se debe a generación al uso energía, cuya demanda ha tornado cada vez mayor. La metodología empleada análisis una caldera industrial del tipo pirotubular...
O processo de usinagem é um dos métodos mais eficientes e eficazes para criação peças finas em que se deseja obter muitos detalhes, com qualidade precisão. Contudo, há uma forte influência da temperatura no processo, isso ocorre, devido a dissipação do calor na região contato entre peça ferramenta. Nos dias atuais, deseja-se alcançar maior produtividade o menor gasto possível, contexto deste trabalho, intuito aumentar vida ferramenta corte, aplicação revestimento corte ferramenta, será...
To cut metals, the oxycut process uses a preheating flame, usually composed of oxygen and combustible gas, in addition to flame-independent jet oxygen. In present work, partially premixed combustion model finite volume-based software was applied analyze flame temperature cutting tip acetylene. At torch inlet boundary, flow rates acetylene were adjusted sweep wide range fuel-oxygen ratio. The results pointed peak surrounding stoichiometric ratio, at 3106 °C for literature 2650.93 numerical...
A análise numérica tem se tornado uma ferramenta essencial nas etapas do desenvolvimento de um projeto devido a sua capacidade solução para fenômenos físicos descritos por leis difícil analítica, economizando tempo e dinheiro, vez que número muito menor protótipos será construído até obtenção resultado final. Para tanto, deve-se encontrar malha ideal forma esta possibilite o mais próximo possível da realidade, com mínimo esforço computacional. O objetivo é estudo aerofólio S809 bastante...