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Title:
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Air/Water Flow in Near Surface Environments

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Organizers:
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Matthew Farthing
Department of Environmental Sciences and Engineering
University of North Carolina
Email: matthew_farthing@unc.edu

Lea Jenkins
Department of Mathematical Sciences
Clemson University
Email:  lea@clemson.edu

Chris Kees
Coastal and Hydraulics Laboratory
US Army Engineer Research and Development Center
Email: christopher.e.kees@erdc.usace.army.mil 

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Minisymposium description:
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Accurate and efficient approximations of air/water flow in the
subsurface are a key part of many hydrological models. Capturing soil
moisture dynamics is particularly important for models of near-surface
environments that require accurate water balance, chemistry, and/or
energy transport calculations. Numerical methods for subsurface
air/water flow must address

-non-smooth nonlinear constitutive laws,
-spatial heterogeneity,
-model equations that change type, and
-sharp and non-smooth moving fronts.

This minisymposium will present research that addresses these issues
with state-of-the-art computational methods, including work on

-spatial and temporal discretizations,
-adaptivity,
-iterative methods,
-coupling to other models (transport, surface water, vegetation models),
-fundamental issues (constitutive theory, pore scale/multiscale  modeling)

These sessions will proceed through the computational modeling process
from model formulations, to discretizations, to solvers.