Effective Diffusivity in Porous Solids
Calculates the effective diffusivity and steady-state mass-transfer flux within a porous solid based on porosity, tortuosity, and bulk diffusion properties.
📖 Need the theory? Read the methodology, assumptions, and equations in the full reference guide.
1. Define Input Parameters
2. Engineering Output
Effective Diffusivity (D_eff)
- m^2 s^-1
- m^2 s^-1
Molar Flux (N)
- mol m^-2 s^-1
- mol m^-2 s^-1
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Effective diffusivity is a critical parameter in process engineering for modeling transport within catalyst pellets and adsorbent beads. It accounts for the reduction in diffusion area and the increased path length caused by the porous structure of the solid.
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