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handbook: a few more changes to the coupled tutorial

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Andreas Lauser 2012-02-13 19:16:29 +00:00 committed by Andreas Lauser
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doc/handbook/tutorial-coupled.tex
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@ -313,7 +313,7 @@ access / set functions as well as the rest of the implementation of
the material description can be found in
\verb+dumux/material/fluidmatrixinteractions/2p+.
\subsection{The definition of run-time parameters}\label{tutorial-coupled:runtime-parameters}
\subsection{Definition of Run-Time Parameters}\label{tutorial-coupled:runtime-parameters}
Some parameters need to be specified at runtime. These can either be
specified directly via command line optioms or the can be collected in
@ -339,7 +339,7 @@ to make only some small changes in the tutorial files.
\begin{enumerate}
\item \textbf{Runing the Program} \\
To get an impression what the results should look like you can first run the original version of the coupled tutorial model by typing \texttt{./tutorial\_coupled}. Note, that the time-step size is automatically adapted during the simulation. For the visualization of the results using paraview please refer to \ref{quick-start-guide}.\\
To get an impression what the results should look like you can first run the original version of the coupled tutorial model by typing \texttt{./tutorial\_coupled}. Note, that the time-step size is automatically adapted during the simulation. For the visualization of the results using paraview please refer to section \ref{quick-start-guide}.\\
\item \textbf{Changing the Model Domain and the Boundary Conditions} \\
Change the size of the model domain so that you get a rectangle with
@ -364,13 +364,13 @@ Now you can change the fluids. Use DNAPL instead of Oil and Brine instead of Wat
If you want to take a closer look on how the fluid classes are defined and which substances are already available please browse through the files in the directory
\texttt{/dumux/material/components} and read chapter~\ref{sec:fluidframework}.
\item \textbf{Use a full-fledged fluid system} \\
\item \textbf{Use a Full-Fledged Fluid System} \\
\Dumux usually describes fluid mixtures via \textit{fluid systems}, see also chapter \ref{sec:fluidframework}. In order to include a fluid system, you first have to comment out lines \ref{tutorial-coupled:2p-system-start} to \ref{tutorial-coupled:2p-system-end} in the problem file. If you use eclipse, this can easily be done by pressing \textit{Ctrl + Shift + 7} -- the same as to cancel the comment later on.\\
Now include the file \texttt{fluidsystems/h2oairsystem.hh} in the material folder, and set a property \texttt{FluidSystem} with the appropriate type, i.e. \texttt{Dumux::H2OAirFluidSystem<TypeTag>}. However, this is a rather complicated fluid system considers mixtures of components and also uses tabulated components that need to be initialized -- i.e. the tables need to be filled with values. Initializating the fluid system is normally done in the constructor of the problem by calling \texttt{GET\_PROP\_TYPE(TypeTag, FluidSystem)::init();}. As water flow replacing a gas is much faster, test your simulation only until $2000$ seconds and start with a time step of $1$ second.\\
Please reverse the changes made in this part of the exercise, as we will continue to use immiscible phases from here on and hence do not need a complex fluid system.
\item \textbf{Changing Constitutive Relations} \\
Use an unregularized linear law with an entry pressure of $p_e = 0.0$ and maximal capillary pressure of e.g. $p_{c_{max}} = 2000.0$ instead of using a
Use an unregularized linear law with an entry pressure of $p_e = 0.0\;\text{Pa}$ and maximal capillary pressure of e.g. $p_{c_{max}} = 2000.0\;\text{Pa}$ instead of using a
regularized Brooks-Corey law for the
relative permeability and for the capillary pressure saturation relationship. To do that you have
to change the file \texttt{tutorialspatialparameters\_coupled.hh}.
@ -385,20 +385,20 @@ of the linear law and the respective \texttt{set}-functions can be found
\ref{tutorial-coupled:exercise1_d}. Adjust the boundary conditions
so that water is again flowing from the left to the right of the
\begin{figure}[ht]
\psfrag{K1 =}{K $= 10^{-8}\text{ m}^2$}
\psfrag{K1 =}{$\mathbf{K} = 10^{-8}\;\text{m}^2$}
\psfrag{phi1 =}{$\phi = 0.15$}
\psfrag{K2 =}{\textcolor{white}{K $= 10^{-9}\text{ m}^2$}}
\psfrag{K2 =}{\textcolor{white}{$\mathbf{K} = 10^{-9}\;\text{m}^2$}}
\psfrag{phi2 =}{\textcolor{white}{$\phi = 0.3$}}
\psfrag{600 m}{600 m}
\psfrag{300 m}{300 m}
\psfrag{600 m}{$600 \;\text{m}$}
\psfrag{300 m}{$300 \;\text{m}$}
\centering
\includegraphics[width=0.5\linewidth,keepaspectratio]{EPS/exercise1_c.eps}
\caption{Exercise 1f: Set-up of a model domain with a heterogeneity. $\Delta \text{x} = 20$ m $\Delta \text{y} = 20$ m.}\label{tutorial-coupled:exercise1_d}
\caption{Exercise 1f: Set-up of a model domain with a heterogeneity. $\Delta x = 20 \;\text{m}$ $\Delta y = 20\;\text{m}$.}\label{tutorial-coupled:exercise1_d}
\end{figure}
domain. You can use the fluids of exercise 1c).\\
\textbf{Hint:} The current position of the control volume can be obtained via \texttt{element.geometry().corner(scvIdx);}.\\
\textbf{Hint:} The current position of the control volume can be obtained using \texttt{element\allowbreak.geometry()\allowbreak.corner(scvIdx)}.\\
When does the front cross the material border? In paraview, the
animation inspector (\textit{View} $\rightarrow$ \textit{Animation
animation view (\textit{View} $\rightarrow$ \textit{Animation
View}) is a convenient way to get a rough feeling of the time-step
sizes.
\end{enumerate}