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app_namelists.tex
\chapter{Namelists and parameters}
To set-up a CAT simulation different types of namelists are available.
A CAT namelist cat{\_}nl to control the numerics and physics of CAT
simulations in general and a simulation namelist sim{\_}nl which specifies
a list of predefined simulations.\\
\noindent
{\bf \Large CAT control: cat{\_}nl} \\
\noindent
We have subdivided the control parameters of CAT into a group of model
numerics and model physics. \\
\noindent
{\bf Model set-up} \\
\noindent
\begin{tabular}{|l|r|l|}
\hline
parameter & default & options, description and type \\
\hline
nx & 64 & grid points in x-direction (integer) \\
ny & 64 & grid points in y-direction (integer) [not active ny = nx] \\
nl & 1 & number of layers (integer) [not active] \\
nsteps & 10000 & number of time steps to be integrated (integer) \\
ngp & 100 & time steps between output of grid-point \\
& & fields (integer) \\
nsp & 100 & time steps between output of spectral \\
& & fields (integer) \\
ngui & 1 & 1/0 graphical user interface on/off (integer) \\
\hline
\end{tabular}
\vspace{0.5cm}
\noindent
{\bf Physics} \\
\noindent
\begin{tabular}{|l|r|l|}
\hline
parameter & default & options and description \\
\hline
jac{\_}mthd & 1 & approximation method of Jacobian \\
& & 0 : no Jacobian \\
& & 1 : divergence form \\
\hline
\end{tabular}
\vspace{0.5cm}
\noindent
{\bf Postprocessing} \\
\noindent
\begin{tabular}{|l|r|l|}
\hline
parameter & default & options and description \\
\hline
npost & 0 & 1/0 additional postprocessing on/off \\
\hline
\end{tabular}
\vspace{0.5cm}
\noindent
{\bf \Large Predefined simulations: sim{\_}nl} \\
With activated predefined
{\bf Simulations} \\
\noindent
\begin{tabular}{|l|r|l|}
\hline
parameter & default & options and description \\
\hline
sim & \tt{"dec01"} & class of predefined simulations (character array) \\
& & \tt{"dec01"} : decaying turbulence \\
& & \tt{"for01"} : forced decaying turbulence \\
& & \tt{"jet01"} : top-hat jet \\
& & \tt{"vor01"} : gaussian elliptical vortex \\
\hline
\end{tabular}
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