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Flow of Water in
Partially-Saturated Soils
Anna Moon
The purpose of this research is to create a model for
the flow of water in partially-saturated soils in one dimension and
two dimensions, and one dimension with the pressure head included. By
creating a model one can predict the flow of fluid through different
mediums therefore making educated decisions.
The following graph is reproduced using Comsol Multiphysics. The x-axis
represents the soil depth and the y-axis is the pressure head. The different
line colors represents time, the first green line being at time = 0.1
day and the last blue line at time = 1 day. Notice at time = 0.1 water
only reaches a soil depth of 30 cm. But as time progresses, the colored
lines begin to reach further down the depth, as well as developing an
expected pressure profile. This is because the model is for four different
types of soil, each with different permeability (the ability for the
material to transmit fluid). As the water moves from one type of soil
to the next, the different properties create resistance or ease, depending
on soil thus causing different change of pressure.
report
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