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Porosity and permeability

     Engineering index
Fluid dynamics index
Porosity and permeability diagram
calc
This calc uses Darcy's law to give the permeability and porosity of a material for which suitable experimental characteristics are known. Viscosity for this purpose is the dynamic (i.e. not kinematic) viscosity).
Pressure in
Pressure out
Distance
Area
Discharge
Viscosity
Residence

Permeability
Porosity
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notes
Darcy's law is an approximation used extensively e.g. in earth sciences to determine the characteristics of a material. It models the flow of a liquid through a permeable medium.
"Discharge" is the discharge rate and "residence" is the time it takes for a tracer to travel through the system (not required for the permeability calculation, which needs only the area, discharge rate, and residence time).