Publication: Effect of volume fraction of au and ag nanofluids on thermophysical properties
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Date
2023-07
Authors
Ahmad Luqman bin Md Rais
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Abstract
Nanofluids, which are colloidal suspensions of nanoparticles in a base fluid, have demonstrated significant promise for improving the properties of traditional heat transfer fluids. Conventional fluids' ability to transfer heat has been shown to be improved by the usage of nanofluids. This study uses Molecular Dynamics simulations to explain how different volume fractions of Gold (Au) and Silver (Ag) nanoparticles in a base fluid, affect the thermophysical characteristics of the nanofluid. The base fluid used here is Argon (Ar). The study starts off by providing a thorough explanation of the simulation methodology used in Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS), including the interatomic potentials, force fields, and ensemble algorithms used to model the hybrid nanofluid system. The thermophysical properties of interest, including thermal conductivity, viscosity, density, and concentration, are calculated, and analysed during a number of simulations runs with various volume fractions and temperatures of Au and Ag nanofluids. The simulations enable the analysis of the nanofluid's behaviour at the atomic and molecular level, revealing details about the underlying mechanisms affecting its thermophysical properties. A deeper understanding of the underlying mechanisms governing the thermophysical behaviour of the nanofluid is made possible by the simulations, which offer insightful observations into the molecular behaviour of the fluid.