hydraulic conductivity


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hy·drau·lic con·duc·tiv·i·ty

ease of pressure filtration of a liquid through a membrane; specifically, Kf = η(Q/A) (δx/δP), where Kf = hydraulic conductivity, η = viscosity of the liquid being filtered, Q/A = volume of liquid filtered per unit time and unit area, and δx/δP = reciprocal of the pressure gradient through the membrane; solute concentrations should be identical on both sides of the membrane. Also applied more loosely to measurements on a total membrane of unknown area and thickness with unmeasured fluid viscosity (K = Q/δP).
References in periodicals archive ?
Concerning the values of saturated hydraulic conductivity presented in Table II, in nine of the ten samples analyzed they were higher in the retention curve model and the difference was noticeable in five of the soils analyzed.
15m] on the distribution of pore size in no-tillage managed areas increased soil hydraulic conductivity at different water tensions, benefiting the soil water flows.
From this point, we consider the unsaturated hydraulic conductivity to be so small that it is unable to deliver enough water to accommodate plant demand.
c]/L) in applied water leading to a 15% reduction in the relative saturated hydraulic conductivity of a calcareous soil from the Riverina region of Australia (Arienzo et al.
The final factor of the DRASTIC index is the C map which is the hydraulic conductivity factor, this was produced by Bundesanstalt fur Geowissenschaften und Rohstoffe BGR (1997) which is the Federal Institute for Geosciences and Natural Resources, they calculated the hydraulic conductivity of the aquifer rocks and B2A7 conductivity was found to be 2 * 10-6--1 * 10 -4 m/s; which reflects the value of 1 according to DRASTIC.
Rowe, "Geosynthetic clay liner (GCL)--chemical compatibility by hydraulic conductivity testing and factors impacting its performance," Canadian Geotechnical Journal, vol.
Where, Q = volume of water passing through the material in time (t), A = area of soil column, and K= average hydraulic conductivity in soil interval (DL) over, which there is a hydraulic head difference (DH).
For using of hydraulic conductivity estimated models, it was needed to soil physical data.
Similarly topography, vadose zone and hydraulic conductivity have been classified into 3, 5 and 3 classes, respectively.
where K is the hydraulic conductivity, Q is the flow rate, [r.
The hydrogeological parameters, namely, porosity, hydraulic conductivity, and the initial temperature of the ground are based on a pumping test and boring test conducted in 2005 at the same site (Nam et al.