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In science and engineering, hydraulic conductivity (K, in SI units of meters per second), is a property of porous materials, soils and rocks, that describes the ease with which a fluid (usually water) can move through the pore space, or fracture network. [1]
the discharge rate (Q) from the recharge rate (R) in a water balance as detailed in the article: hydrology (agriculture) the permissible long term average depth of the water table (Dw) on the basis of agricultural drainage criteria; the soil's hydraulic conductivity (Ka and Kb) by measurements; the depth of the bottom of the aquifer (Di)
Hydraulic conductivity (K) is a property of soil that describes the ease with which water can move through pore spaces. It depends on the permeability of the material (pores, compaction) and on the degree of saturation. Saturated hydraulic conductivity, K sat, describes water movement through saturated media. Where hydraulic conductivity has ...
Soil temperature is important for the survival and early growth of seedlings. [92] Soil temperatures affect the anatomical and morphological character of root systems. [93] All physical, chemical, and biological processes in soil and roots are affected in particular because of the increased viscosities of water and protoplasm at low ...
For example, the measurement of product conductivity is a typical way to monitor and continuously trend the performance of water purification systems. The electrolytic conductivity of ultra-high purity water increases as a function of temperature (T) due to the higher dissociation of H 2 O in H + and OH − with T. In many cases, conductivity ...
This allows to take into account the effect of temperature on the viscosity of the fluid flowing though the porous medium and to address other fluids than pure water, e.g., concentrated brines, petroleum, or organic solvents. Given the value of hydraulic conductivity for a studied system, the permeability can be calculated as follows:
For example, the conductance of water through a stream-bed is: = where is the conductance of the stream-bed ([L 2 T −1]; m 2 s −1 or ft 2 day −1) is the hydraulic conductivity of the stream-bed materials([LT −1]; m·s −1 or ft·day −1];
Soil consists of a solid phase of minerals and organic matter (the soil matrix), as well as a porous phase that holds gases (the soil atmosphere) and water (the soil solution). [ 1 ] [ 2 ] Accordingly, soil is a three- state system of solids, liquids, and gases. [ 3 ]