https://doi.org/10.1140/epjb/s10051-022-00379-w
Regular Article - Statistical and Nonlinear Physics
Collective diffusion coefficient in limited channel: two methods for fluid particles
Siyuan Laboratory, Department of Physics, Jinan University, 510632, Guangzhou, China
Received:
27
April
2022
Accepted:
7
July
2022
Published online:
12
August
2022
Molecular dynamics and Monte Carlo methods are common measurements to study the diffusion coefficients of the fluid particles under restricted conditions. Here, the collective diffusion coefficient will be obtained through two methods: the one is Fick’s first law (direct mode), and the other is the relationship between collective diffusion coefficient and self-diffusion coefficient (indirect mode). A comparison between two methods is also discussed. The ways of calculation, which are applied for the self-diffusion coefficient and collective diffusion coefficient, are helpful for studying transport characteristics of various molecules in defined space.
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