Abstract
In this paper, the laminar flow over flat plate of three different nanofluids is investigated. The fluid is considered as water with three different kind of solid particles Al2O3, TiO2, and Fe3O4 of different volume fractions (1, 2, 3, and 4%). The values of viscosity, heat capacity, density, and thermal conductivity depending on volume fraction for the three nanofluids are evaluated. Numerical simulation has been conducted for analysis the impact of the nanoparticles on the heat transfer properties, on the temperature and velocity profiles, on the wall shear stress and on the skin friction coefficient. The results show that as the value of volume fraction increases the values of the wall shear stress, skin friction, and heat transfer increase, but the velocity decreases. A comparison between the three nanofluids presents the difference in the thermal enhancement, velocity profiles, and thermal boundary layer. With the volume fraction for all three nanofluids polynomial connections has been obtained to describe for the relation of the wall shear stress, skin friction coefficient and average heat transfer coefficient.
Highlights
The traditional fluids have limited heat transfer capabilities due to the poor thermal properties such as the thermal conductivity, which led researchers to try to overcome this barrier by improving the thermal conductivity of this fluids to have more efficient systems
Numerical simulation has been conducted for analysis the impact of the nanoparticles on the heat transfer properties, on the temperature and velocity profiles, on the wall shear stress and on the skin friction coefficient
The results show that as the value of volume fraction increases the values of the wall shear stress, skin friction, and heat transfer increase, but the velocity decreases
Summary
The traditional fluids (e.g., water, ethylene, oil etc) have limited heat transfer capabilities due to the poor thermal properties such as the thermal conductivity, which led researchers to try to overcome this barrier by improving the thermal conductivity of this fluids to have more efficient systems. Adding particles of various materials that have higher thermal conductivity than the base fluid can enhance the thermal properties [1], [2] This method was introduced by Cho [3] he coined the term nanofluid. Nanofluids have a bigger effective thermal conductivity due to the extremely large surface area of nanoparticles and led them to be potential candidate considering in the heat transfer media This the thermal performance enhancement method has attracted considerable attention in wide range of industrial applications and academic field. Published under licence by IOP Publishing Ltd approach in various geometries such as flat plate, wedge, square channel, circular tube and flow over cylinder[2], [8], [9], [10] These studies highlight the enhancement of the heat transfer in the presence of nanoparticles in the base fluid. The skin friction coefficient and the local Nusselt number in the nanofluids are calculated in comparison of the impact of the nanoparticles and particle concentrations
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
