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|  | | Porosity and permeability
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|  | | |  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).
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| | |  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). | | ||||||
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© Andy & Steve Shipway 2008