A5034888838- Heat Transfer and Optimization
- Nanofluid Flow and Heat Transfer
- Heat Transfer Mechanisms
- Fluid Dynamics and Turbulent Flows
- Fluid Dynamics and Heat Transfer
- Combustion and flame dynamics
- Aerodynamics and Acoustics in Jet Flows
- Computational Fluid Dynamics and Aerodynamics
- Heat Transfer and Boiling Studies
- Heat transfer and supercritical fluids
- Advanced Combustion Engine Technologies
- Particle Dynamics in Fluid Flows
- Innovative concrete reinforcement materials
- Surface Modification and Superhydrophobicity
- Electrohydrodynamics and Fluid Dynamics
- Fluid Dynamics and Thin Films
- Fuel Cells and Related Materials
- Plant Surface Properties and Treatments
- Nuclear Engineering Thermal-Hydraulics
- Thermal properties of materials
- Lattice Boltzmann Simulation Studies
- Heat and Mass Transfer in Porous Media
- Acoustic Wave Phenomena Research
- Radiative Heat Transfer Studies
- Landfill Environmental Impact Studies
Indian Institute of Technology Madras
2015-2024
Indian Institute of Technology Palakkad
2024
Pondicherry University
2001-2019
Indira Gandhi Centre for Atomic Research
2016-2017
Helmut Schmidt University
2009
Indian Institute of Technology Indore
1989-2002
University of Pennsylvania
1980-1985
This article reports on the International Nanofluid Property Benchmark Exercise, or INPBE, in which thermal conductivity of identical samples colloidally stable dispersions nanoparticles “nanofluids,” was measured by over 30 organizations worldwide, using a variety experimental approaches, including transient hot wire method, steady-state methods, and optical methods. The nanofluids tested exercise were comprised aqueous nonaqueous basefluids, metal oxide particles, near-spherical elongated...
Thermal conductivities of two kinds Au nanoparticles were measured in water and toluene media. The soluble particles, 10–20 nm mean diameter, made with citrate stabilization showed thermal conductivity enhancement 5%–21% the temperature range 30–60 °C at a loading 0.000 26 (by volume). effect was 7%–14% for particles stabilized monolayer octadecanethiol even 0.011%. Comparatively lower observed larger diameter Ag significantly higher loading. Effective 9%, vanishing concentrations, points to...
A comprehensive model has been proposed to account for the large enhancement of thermal conductivity in nanofluids and its strong temperature dependence, which classical Maxwellian theory unable explain. The dependence on particle size, concentration, taken care simultaneously our treatment. While geometrical effect an increase surface area with a decrease rationalized using stationary model, accounts enhancement, moving developed from Stokes-Einstein formula explains effect. Predictions...
Nanofluids have shown remarkable attraction in heat transfer community due to its reported enhanced thermal properties. One factor which can restrict nanofluids application is the increased viscosity value (compared classical predictions). Particle aggregation occurring was major reason for this observation. Even though majority of aqueous prepared literature were stabilized electrostatically by adjusting pH, studies on effect electrical double layer thus created and influence increase has...
Abstract A fundamental study of electro discharge machining (EDM) based on the physics an arc and heat transfer theory has been carried out. The field equations for electric potential temperature in spark region are simultaneously solved by employing finite element method. Using criterion constant current at any cross section a spark, radii different sections corrected until convergence. final shape obtained is noncylindrical, sections. Also, percent input absorbed cathode, anode, dielectric...
Adding a small volume fraction of carbon nanotubes (CNTs) to liquid enhances the thermal conductivity significantly. Recent experimental findings report an anomalously wide range enhancement values that continue perplex research community and remain unexplained. In this paper we present theoretical model based on three-dimensional CNT chain formation (percolation) in base corresponding resistance network. The considers random orientation CNT-CNT interaction forming percolating chain....
Increase in the specific surface area as well Brownian motion are supposed to be most significant reasons for anomalous enhancement thermal conductivity of nanofluids. This work presents a semi-empirical approach same by emphasizing above two effects through micro-convection. A new way modeling nanofluids has been explored which is found agree excellently with wide range experimental data obtained present authors published literature