Molecular dynamics simulation of pressure isotherms for nanofluids

Abstract

Pressure isotherms have been constructed by the molecular dynamics method for nanofluids based on argon and zinc, aluminum, and lithium nanoparticles. Nanoparticle volume concentration is varied from 1 to 10%. Nanoparticles have sizes of 1 or 2 nm. The equation of state has been shown to essentially depend on the volume concentration, size, and material of the particles. Depending on the density of a carrier fluid, the pressure of a nanofluid (at a preset density) may be either higher or lower than the pressure of the basic fluid. On the other hand, the partial pressure of a pseudogas of nanoparticles decreases rapidly with an increase in their sizes (inversely proportional to the cubed particle radius).