Physics – Fluid Dynamics
Scientific paper
2011-05-12
Physics
Fluid Dynamics
Scientific paper
We present tables for self-diffusion coefficients of the Lennard-Jones liquids and gases for various model formulas in the modified free volume theory of diffusion in the case of reduced temperatures $T^{\ast}=6.0$, 4.0, 1.3, 1.0, 0.8, 0.7 with reduced density ranging from $\rho^{\ast}=0.025$ to 1. Their accuracies are compared with the molecular dynamic simulation results. In the gas and liquid density regimes, the formula $D_{CERC}$ for the self-diffusion coefficient is accurate within maximum 4% of the molecular dynamics simulation values reported in the literature. It is the most reliable among the formulas presented
Eu Byung Chan
Hunjan Jagtar Singh
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