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Mass diffusivity

Diffusivity, mass diffusivity or diffusion coefficient is usually written as the proportionality constant between the molar flux due to molecular diffusion and the negative value of the gradient in the concentration of the species. More accurately, the diffusion coefficient times the local concentration is the proportionality constant between the…

Community, Temperature dependence of the diffusion coefficient & Effective diffusivity in porous media

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Temperature dependence of the diffusion coefficient

Arrhenius equationActivation energyUniversal gas constantVacancy diffusionInterstitial sites
20 related topics

Effective diffusivity in porous media

Porous mediaMacroscopicPorosityConstrictivityTortuosity
6 related topics

Population dynamics: dependence of the diffusion coefficient on fitness

Kinesis
1 related topics

Overview

Molar fluxDiffusionFick's lawPhysical chemistryPairwise
7 related topics

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Temperature dependence of the diffusion coefficient

Population dynamics: dependence of the diffusion coefficient on fitness

Effective diffusivity in porous media

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Mass diffusivity

Nodes39
Edges38
Triples4
Avg. degree1.95
Density0.051282
Components1

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Important terminology

diffusion coefficient diffusivity temperature displaystyle constant frac gas molar gases theory pore value dependence effective equation lattice two liquid pores

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SubjectPredicateObjectConfidenceSrc
the Mie potential or Lennard-Jones potentialinstance ofwhile for more realistic intermolecular potentials0.80text
its computation is more complexinstance ofwhile for more realistic intermolecular potentials0.80text
and may involve invoking a thermodynamic perturbation theoryinstance ofwhile for more realistic intermolecular potentials0.80text
such as SAFTinstance ofwhile for more realistic intermolecular potentials0.80text

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