Permeability measurement in porous media under unsaturated paths
نویسندگان
چکیده
Understanding the flow through porous media when it is part of geotechnical-hydraulic structures has been a scenario calculated from most unfavorable situation. The passage water skeleton soil considered in saturated condition. Few studies to date consider partially trajectories regarding influence on stability dam, reservoir, embankment, among others. Estimating speed with which fluid under analysis flows challenging perform by conventional methods. By contrast, nowadays, easy obtain for soil. This study aimed measure hydraulic conductivity (coefficient permeability) granular soils using easily accessible laboratory techniques. permeability unsaturated conditions will be measured, varying suction sample, an essential requirement there situation partial saturation. results provided data values that allow very evident difference between both proposed conditions.
منابع مشابه
Noninvasive quantitative measurement of bacterial growth in porous media under unsaturated-flow conditions.
Glucose-dependent growth of the luxCDABE reporter bacterium Pseudomonas fluorescens HK44 was monitored noninvasively in quartz sand under unsaturated-flow conditions within a 45- by 56- by 1-cm two-dimensional light transmission chamber. The spatial and temporal development of growth were mapped daily over 7 days by quantifying salicylate-induced bioluminescence. A nonlinear model relating the ...
متن کاملAbsolute Permeability Calculation by Direct Numerical Simulation in Porous Media
Simulating fluid flow at micro level is an ongoing problem. Simplified macroscopic flow models like Darcy’s law is unable to estimate fluid dynamic properties of porous media. The digital sample reconstruction by high resolution X-ray computed tomography scanning and fluid-dynamics simulation, together with the increasing power of super-computers, allow to carry out pore-scale simulations throu...
متن کاملElectrokinetic coupling in unsaturated porous media.
We consider a charged porous material that is saturated by two fluid phases that are immiscible and continuous on the scale of a representative elementary volume. The wetting phase for the grains is water and the nonwetting phase is assumed to be an electrically insulating viscous fluid. We use a volume-averaging approach to derive the linear constitutive equations for the electrical current de...
متن کاملStatistical mechanics of unsaturated porous media.
We explore a mean-field theory of fluid imbibition and drainage through permeable porous solids. In the limit of vanishing inertial and viscous forces, the theory predicts the hysteretic "retention curves" relating the capillary pressure applied across a connected domain to its degree of saturation in wetting fluid in terms of known surface energies and void space geometry. To avoid complicated...
متن کاملOn the rapid estimation of permeability for porous media using Brownian motion paths
We describe two efficient methods of estimating the fluid permeability of standard models of porous media by using the statistics of continuous Brownian motion paths that initiate outside a sample and terminate on contacting the porous sample. The first method associates the ‘‘penetration depth’’ with a specific property of the Brownian paths, then uses the standard relation between penetration...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Dyna-colombia
سال: 2021
ISSN: ['0012-7353', '2346-2183']
DOI: https://doi.org/10.15446/dyna.v88n219.95162