Geoscience Reference
In-Depth Information
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-8-6-4-20246
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Solid displacement vertical component
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Figure 4.1
Horizontal and vertical components of the solid displacement vector and relative fluid displacement in the frequency
domain (real components).
a)
Horizontal component of the solid displacement vector.
b)
Vertical component of the solid
displacement vector.
c)
Horizontal component of the fluid displacement vector.
d)
Vertical component of the fluid displacement vector.
Note the efficiency of the C-PML approach, at the boundaries, in attenuating the seismic waves. The use of the C-PML
effectively eliminates reflections from the outer boundaries of the model. (
See insert for color representation of the figure
.)
reported in Table 4.2. We use a relatively low viscosity for
the NAPL, and as is usually done, the injected water is
heated to decrease the NAPL viscosity. In this analysis,
we neglect all thermally induced effects other than the
reduction of the viscosity of the NAPL. Also, the NAPL is
assumed to be the nonwetting phase in this numerical
experiment. This is realistic only a short time after an oil
spill. Indeed, after a period of few years, the wettability
