Department of Physics Clarkson University
Physics Graduate Seminar Presented by Md Ali Rayhan, graduate student (Advisor: Prof. Maria Gracheva)
Aluminum Nanoparticles Dispersed in Water and Liquid CO2 : A Molecular Dynamics Study
Nanoparticles have widespread use in various branches of science and engineering. The working fluid of thermosyphons is one of them where various nanoparticles are dispersed in the base fluids to effectively transfer heat from the ground to the environment. We studied the Aluminum(Al) nanoparticles dispersed in base fluids such as water and CO2 using molecular dynamics simulations. To prepare our nanoparticle solution, we used a 3nm size Al nanoparticle. First, we used the Al nanoparticle to make a solution with water and ran the simulation at 295K temperature. The density of water molecules in the solution was fixed using the mass and the volume of the water box at a temperature of 295K and 1 bar pressure. Subsequently, we added the nanoparticle in liquid CO2 and ran the simulation at 270K temperature . For the liquid CO2 , the density was calculated at 270K temperature and 32 bar pressure. We analyzed the temperature, volume, and the pressure graphs of the simulations making sure both simulations were sustained for the desired period of time. Our future research directions include finding the thermal conductivity of these solutions with Al nanoparticles with varying nanoparticle sizes and densities.
Friday, November 22nd 2024 3:30 P.M. SC 344