Wave Transmission through Porous Structures
Assuming long, normally incident waves on a homogeneous porous structure of rectangular cross section, a simple explicit solution for the transmission and reflection coefficients are obtained...

Permeability of Cohesionless Soils
The permeability coefficient, K, of a porous matrix in Darcy's equation of hydraulic conductivity depends mainly on the properties of the solid...

Longitudinal Dispersion in Saturated Porous Media
Analytical solutions are developed for two problems of longitudinal dispersion within semi-infinite, nonadsorbing, homogeneous, isotropic media in unidirectional flow fields. The source...

Hydrology of Porous Pavement Parking Lots
Numerical solutions of the Boussinesq equation were used to examine the hydrologic behavior of porous pavement systems incorporating subdrains in open graded base courses placed on impermeable...

Friction Factor and Reynolds Number in Porous Media Flow
The concept of hydraulic radius of pore space is used to substantiate that the square root of the permeability is the important length parameter in defining the friction factor and Reynolds...

Saturated-Unsaturated Seepage by Finite Elements
A Galerkin-type finite element method is employed to solve the quasilinear partial differential equations of transient seepage in saturated-unsaturated porous media. The resulting computer...

Damping of Water Waves over Porous Bed
Based on linearized Navier-Stokes equations and Darcy's equations, the viscous damping of small amplitude surface waves over a permeable bed is reexamined. Boundary layer approximation...

Studies on Seepage from Canals with Partial Lining
A study of seepage from partially lined trapezoidal canals in a homogeneous isotropic porous medium of large depth is done using inversion of hodograph and Schwarz-Christoffel transformation....

Mean Pore Sizes from Flow Measurements
A method is described in this note for determining the mean pore size of a porous plug from direct current measurements and hydraulic flows. This study deals with fitted glass disks having...

Consolidation of Porous Media with Non-Darcy Flow
A nonlinear quasi-static theory of one-dimensional consolidation accounting for non-Darcy fluid flow is presented. A specific boundary value problem is examined with the physics being...

Inverse Solution to Three-Dimensional Flows
Methods are developed for obtaining numerical solutions to three-dimensional, inviscid, incompressible fluid flows and free surface Darcian flows in porous media. An inverse formulation...

Viscoelastic Plate on Poroelastic Foundation
A solution for the quasistatic response of a linear viscoelastic infinite plate supported on a poroelastic half-space, subjected to a uniform circular loading, is presented. The poroelastic...

Variational Formulation of Dynamics of Fluid-Saturated Porous Elastic Solids
Biot's theory of acoustic propagation in saturated porous elastic media has been used to systematically develop a Gurtin type variational principle which has been discretized by the finite...

Sorption Kinetics in Finite-Bath Systems
Rates of sorption on activated carbon in rapidly agitated batch reactors can be influenced by both surface mass transfer and internal pore diffusion mechanisms. Mathematic interpretation...

Effect of Axial Flow on Perforated Pipe Outflow
There has been considerable past study, mostly of a theoretical nature concerning the flow of fluids in conduits with perforated or porous walls. This technical note deals primarily with...

Pore Fluid and the Mechanical Behavior of Rock

Variational Principles for Fluid Flow in Porous Media
Variational methods are being employed to an increasing degree in solving various types of transport problems. It appears that these methods will have increasing use in attacking many...

Steady Seepage toward Circle of Finite Radius
There are a number of practical examples in the theory of steady seepage through porous media in which boundary geometries can be modeled with a circle next to an infinitely long, straight...

Radial Flow between Porous and Solid Disks
In preparation for an experimental investigation for the case in which the solid disk rotates while the porous disk remains stationary, theoretical calculations similar to Dorfman's have...

Phreatic Surface Location after Drawdown
To determine the stability of an earth embankment following rapid drawdown, it is necessary to locate the phreatic surface. Using a finite difference technique, the partial differential...

 

 

 

 

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