September 2013
Intermediate to advanced
320 pages
11h 25m
English
Content preview from Finite Element Techniques for Fluid Flow
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6 Flow Through
Porous Media
6.1 PRINCIPLES OF GROUNDWATER FLOW
In this chapter we accept that groundwater flow only occurs in the
saturated region of a porous soil, and we assume that the pores in a
medium such as sand are interconnected and that the fluid can flow
through them. The ratio of these voids to the total volume is called
porosity and is denoted by
207
(6.1)
The relationship governing groundwater flow is known as Darcy's
law. Its form can be deduced from the general Navier-Stokes
equations under the assumption that the flow is laminar and that
inertial forces are negligible when compared with the viscous forces.
Given the Reynold ...
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