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42 lines
1.4 KiB
TeX
42 lines
1.4 KiB
TeX
\section{Specifying Parameters}
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\label{sec:inputFiles}
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As already mentioned in the previous section, \eWoms allows to specify
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a number of parameters at run time. A description of these parameters
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can usually be obtained by passing the \texttt{--help} parameter to the
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executable. The values used for these parameters are printed to the
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terminal during the start-up of the simulation, e.g. the if the \texttt{lens\_immiscible}
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simulation is run with the parameters \texttt{--end-time=30e3 --foo-param=123}, it will print an output similar to
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\begin{lstlisting}[style=Bash]
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###########
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# Parameters specified at run-time
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###########
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EndTime="30e3"
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###########
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# Parameters with use compile-time fallback values
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###########
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AmgCoarsenTarget="5000"
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...
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VtkWriteSaturations="1"
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VtkWriteTemperature="1"
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VtkWriteViscosities="0"
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###########
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# Parameters unknown to the simulation
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###########
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FooParam="123"
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\end{lstlisting}
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This can be directly copy-and-pasted into a file
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(e.g. \texttt{myparams.ini}). The simulation can be instructed to use
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these parameters by passing the \texttt{--parameter-file=myparams.ini}
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parameter the next time it is run. Of course, this file can also be
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adapted.
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An additional hint: Always watch out for parameters which are unknown
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to the simulation, as this is \emph{very} useful for spotting typos.
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%%% Local Variables:
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%%% mode: latex
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%%% TeX-master: "ewoms-handbook"
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%%% End:
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