A5000682442- Heat Transfer and Boiling Studies
- Heat Transfer and Optimization
- Nanofluid Flow and Heat Transfer
- Heat Transfer Mechanisms
- Fluid Dynamics and Mixing
- Fluid Dynamics and Heat Transfer
- Electrohydrodynamics and Fluid Dynamics
- Reservoir Engineering and Simulation Methods
- Non-Destructive Testing Techniques
- Metallurgical Processes and Thermodynamics
- Electrical and Bioimpedance Tomography
- Spacecraft and Cryogenic Technologies
- Geophysical Methods and Applications
- Fluid Dynamics and Thin Films
- Refrigeration and Air Conditioning Technologies
- Petroleum Processing and Analysis
- Nanomaterials and Printing Technologies
- Surface Modification and Superhydrophobicity
- Coal Combustion and Slurry Processing
- Ultrasound and Cavitation Phenomena
- Solar Thermal and Photovoltaic Systems
- Microfluidic and Bio-sensing Technologies
Universidade de São Paulo
2009-2022
Universidade Federal do Espírito Santo
2022
Universidade Federal de São Carlos
2009-2015
In the present study, thermal performance of a micro heat spreader based on flow boiling mechanism was evaluated. The under study has foot print area 15 × mm2 and is composed by 50 channels with width 100 μm depth 500 μm. Experiments were performed for R134a, fluxes up to 310 kW/m2 (based area), mass velocities from 400 1500 kg/m2s, saturation temperatures approximately 25°C liquid subcoolings 5 15°C. Heat-sink averaged transfer coefficients effective 9 kW/m2K obtained. From analyses...
The scope of the present paper is evaluation heat transfer coefficient during flow boiling DI-water/silica nanofluid inside a 1.1 mm ID tube. experiments were performed for nanoparticles and DI-water with both having thermal conductivities same order magnitude (kDI-water = 0.6 W/mK, ksilica 1.4 W/mK). So, it was possible investigating effect on under condition negligible conductivity enhancement. Experiments carried out mass velocities 200, 400 600 kg/m2s, fluxes from 60 kW/m2 to 350...
It is shown that the generation of cavities in a liquid can produce usable work, which illustrated by stretching string. This work done during expansion cavity, and not with its collapse. Basic equations are presented for movement device moved so called cavity events. A theoretical solution also proposed, uses polynomial functions relating "excess pressure" time. Evaluations force generated showed mean peak value about 58 N moving container, while measurements container fixed to support 476...