A5079115962- Heat Transfer Mechanisms
- Heat Transfer and Optimization
- Heat transfer and supercritical fluids
- Nanofluid Flow and Heat Transfer
- Heat Transfer and Boiling Studies
- Fluid Dynamics and Turbulent Flows
- Solar Thermal and Photovoltaic Systems
- Nuclear Engineering Thermal-Hydraulics
- Fluid Dynamics and Mixing
- Fluid Dynamics and Heat Transfer
- Rocket and propulsion systems research
- Spacecraft and Cryogenic Technologies
- Heat Transfer and Numerical Methods
- Phase Equilibria and Thermodynamics
- Nuclear reactor physics and engineering
- Superconducting Materials and Applications
- Innovative Microfluidic and Catalytic Techniques Innovation
- Radiative Heat Transfer Studies
- Reservoir Engineering and Simulation Methods
- Fluid Dynamics and Thin Films
- Cyclone Separators and Fluid Dynamics
- Photovoltaic System Optimization Techniques
- Fluid Dynamics and Vibration Analysis
- Advanced Thermodynamics and Statistical Mechanics
- Ranque-Hilsch vortex tube
University College London
2024
University of Pretoria
2014-2024
Forced convection experiments are challenging to perform in smooth horizontal circular tubes, because very low heat fluxes required ensure that the buoyancy effects do not enhance transfer coefficients. Previous work transitional flow regime mainly focused on mixed and limited has been conducted for forced transfer. It was therefore purpose of this study experimentally investigate pressure drop characteristics during specifically conditions. Vertical upward downward flows through a test...
Correlations to predict the hydrodynamic and thermal entrance lengths in a smooth horizontal tube heated at constant heat flux are often restricted forced convection conditions. The reason being that most scholars do not distinguish very well between mixed Furthermore, correlations have been developed for hydrodynamically fully thermally developing flows. purpose of this study was experimentally investigate laminar flows tubes flux. Simultaneously were investigated both Two circular test...
Extensive research has been conducted on the heat transfer characteristics related to boundary conditions present in phase-change applications. However, there remains a fundamental gap understanding local of mixed convective laminar flow exposed uniform wall temperature condition. Furthermore, is disparity between numerical and experimental studies investigating this This study addresses these gaps by being first experimentally investigate developing through horizontal tube A novel setup was...
Nucleate pool boiling is known for its exceptional heat transfer coefficients, with the use of cavities further improving bubble nucleation and rate. To promote this enhancement technique, a thorough understanding influence cavity geometry on single dynamics required. The depth radius cylindrical conical nucleate R1234yf were numerically investigated. was varied between 50 {\mu}m 400 100 1000 at fixed flux 28 kW/m$^2$. It found that maximum equivalent diameter prior to departure constant...
Abstract This study investigated the effect of large values relative surface roughness on heat transfer and pressure drop characteristics using simultaneously measured data. Experiments were conducted a horizontal circular tube with base inner diameter 5 mm length 4 m. One smooth two rough tubes, roughnesses 0.04 0.11, tested at different constant fluxes between Reynolds numbers 100 8 500. Water was used as test fluid Prandtl number varied 3 7. Contrary to trend in Moody Chart, significant...