Abstract
CFD simulation of the heat transfer and pressure drop characteristics of different nanofluids in a minichannel flow has been explained using FLUENT version 6.3.26. Different nanofluids with nanoparticles of Al2O3, CuO, SiO2, and TiO2have been used in the simulation process. A comparison of the experimental and computational results has been made for the heat transfer and pressure drop characteristics for the case of Al2O3-water nanofluid for the laminar flow. Also, computations have been made by considering Brownian motion as well as without considering Brownian motion of the nanoparticles. After verification of the computational model with the experimental results for Al2O3-water nanofluid, the simulations were performed for the same experimental readings for different nanofluids in the laminar flow regime to find out the heat transfer and pressure drop characteristics.
Highlights
Nanofluids are engineered colloids made up of a base fluid and the nanoparticles
The experiment was carried out for a minichannel flow of Al2O3-water nanofluid in the laminar flow region
The experimental results were compared with the results obtained by simulations carried on FLUENT 6.3.26
Summary
Nanofluids are engineered colloids made up of a base fluid and the nanoparticles. The introduction of nanoparticles enhances the heat transfer performance of the base fluids significantly. The benefits of using nanofluids compared to the conventional base fluids are as follows. (2) The pumping power required for the equivalent heat transfer is less than that compared to pure liquids. (3) The properties like thermal conductivity, density, and so forth may be varied by varying particle concentrations to suit different applications. The nanofluids have various applications as they provide an efficient thermal energy transfer due to higher heat transfer with comparable pumping power required. Some of these applications are stated as follows
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