Tortuositeetin
Tortuositeetti, commonly referred to as tortuosity in English, is a dimensionless quantity used to describe how winding or indirect a transport path is within a porous or complex medium. It characterizes the deviation of actual pathways that particles or signals must traverse from a direct straight-line route between two points.
A typical definition states that tortuositeetti is the ratio of the effective path length through the medium
Tortuositeetti is used to relate transport properties of a material to those of the free medium. For
Measurement and estimation methods include tracer diffusion experiments, impedance or conductivity tests, and image-based analyses (for
Applications of tortuositeetti span hydrology, petroleum engineering, catalysis, battery and fuel-cell materials, and other fields where