Molecular diffusion is defined as the movement of molecules caused by Brownian motion or composition gradients in a mixture of fluids (Mohebbinia et al., 2017). From: Developments in Petroleum Science, 2020 About this pageSet alert Also in subject area: Physics and AstronomyDiscover other topics...
Length and cross-sectional area of the microchannel may be selected to obtain a predetermined rate of molecular diffusion between fluids. When the fluids are liquids, flow through the microchannel is laminar and the capillary action of the microchannel and fluid is such that the fluid flow is ...
Molecular diffusion effects in LES of a piloted methane-air (Sandia D) flame are investigated on a series of grids with progressively increased resolution towards the DNS limit. The role of molecular diffusivity in effecting spatial transport is studied by drawing a comparison with the turbulent dif...
Extensive molecular-dynamics, MD, simulations of Lennard-Jones, LJ, and soft-sphere, SS, fluids have been made. The LJ state points agree excellently with the predictions of a recent equation of state for this fluid. Self-diffusion coeff... DM Heyes - 《Journal of the Chemical Society Fara...
The basic methodology to measure the diffusion coefficients from volume expansion was first reported by (Riazi, 1996) applying the fluids system between CH4 gas and C5H12 in a PVT cell under constant volume and pressure. In this report, oil swelling, which is proportional to gas solubility, ...
As opposed to Brownian motion, though, this diffusion process is not the sum of random kicks that are instantaneous. Instead, the active fluctuations are correlated in time. They have a memory based on the history of the active carpet configuration. Therefore, we first focus on a simple case...
Detailed molecular dynamics simulations are carried out to investigate the translation–rotation coupling in linear molecules. We calculated the moment of inertia ratio dependence of the self–diffusion coefficients D, the so–called dynamic isotope effect on the self–diffusion, in pure fluids. Our mo...
Molecular Modeling of Hydrogen Bonding Fluids: Phase Behavior of Industrial Fluids Predictions of the transport properties self-diffusion coefficient and shear viscosity are presented for a recently developed molecular ammonia model. Thes... S Eckelsbach,M Bernreuther,C Engin,... 被引量: 0发表: 20...
When the simultaneous dependence with density and temperature is considered, we found that the diffusion is a unique function of the variable ργ/T, where the exponent γ is about 1.7, in contrast with three-dimensional m − 6 Lennard-Jones fluids, where it has been found to be in...
Mass effects and transport properties in classical fluids: A molecular dynamics experiment on fused NACLTheoretical or Mathematical/ electrical conductivity of electrolytic liquidselectromigrationisotope effectsliquid structureself-diffusion in liquidssodium compounds/ molecular dynamicsfused NaCl...