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Author(s): A. Dassargues
Abstract:
nt simulation of water table aquifers
using a pressure dependent storage law
A.
Dassargues
Laboratoires de Geologic de I'lngenieur,
d'Hydrogeologie, et de Prospection Geophysique
Liege, Belgium
ABSTRACT
In groundwater problems involving unconfined aquifers, the shape and the location of
the water table surface have to be determined as a part of the solution of the flow
problem.
The transient changes affecting the position of this free surface alter the
geometry of the flow system so that the relationship between changes at boundaries and
changes in piezometric heads and flows must be non linear.
Methods have been
developed recently using fixed mesh grids and non linear codes.
They are based
generally on non linear variation laws of the hydraulic conductivity of the porous
medium in function of the pore pressure.
Other methods based on the variation of the storage are exposed.
When coupled
with the hydraulic conductivity variation law, they lead to solving the gener...
Pages: 8
Size: 842 kb
Paper DOI: 10.2495/MB930011
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