source: palm/trunk/TUTORIAL/SOURCE/mrun_steering_parameters.tex @ 982

% $Id: mrun_steering_parameters.tex 973 2012-08-07 16:03:47Z maronga $
\input{header_tmp.tex}
%\input{../header_lectures.tex}

\usepackage[utf8]{inputenc}
\usepackage{ngerman}
\usepackage{pgf}
\usetheme{Dresden}
\usepackage{subfigure}
\usepackage{units}
\usepackage{multimedia}
\usepackage{hyperref}
\newcommand{\event}[1]{\newcommand{\eventname}{#1}}
\usepackage{xmpmulti}
\usepackage{tikz}
\usetikzlibrary{shapes,arrows,positioning}
\usetikzlibrary{decorations.markings}             %neues paket
\usetikzlibrary{decorations.pathreplacing}        %neues paket
\def\Tiny{\fontsize{4pt}{4pt}\selectfont}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{multicol}
\usepackage{pdfcomment}
\usepackage{graphicx}
\usepackage{listings}
\lstset{showspaces=false,language=fortran,basicstyle=
        \ttfamily,showstringspaces=false,captionpos=b}

\institute{Institut fÌr Meteorologie und Klimatologie, Leibniz UniversitÀt Hannover}
\date{last update: \today}
\event{PALM Seminar}
\setbeamertemplate{navigation symbols}{}

\setbeamertemplate{footline}
  {
    \begin{beamercolorbox}[rightskip=-0.1cm]&
     {\includegraphics[height=0.65cm]{imuk_logo.pdf}\hfill \includegraphics[height=0.65cm]{luh_logo.pdf}}
    \end{beamercolorbox}
    \begin{beamercolorbox}[ht=2.5ex,dp=1.125ex,
      leftskip=.3cm,rightskip=0.3cm plus1fil]{title in head/foot}
      {\leavevmode{\usebeamerfont{author in head/foot}\insertshortauthor} \hfill \eventname \hfill \insertframenumber \; / \inserttotalframenumber}
    \end{beamercolorbox}
    \begin{beamercolorbox}[colsep=1.5pt]{lower separation line foot}
    \end{beamercolorbox}
  }
%\logo{\includegraphics[width=0.3\textwidth]{luhimuk_logo.pdf}}

\title[General Steering Parameters]{General Steering Parameters}
\author{Siegfried Raasch}

\begin{document}

% Folie 1
\begin{frame}
\titlepage
\end{frame}

\section{General Steering Parameters}
\subsection{General Steering Parameters}

% Folie 2
\begin{frame}                         
   \frametitle{General Hints for Carrying out LES}
   
   
   \begin{itemize}
      \scriptsize
      
      \item<2-> \textbf{Domain size}
      \begin{itemize}
         \scriptsize
         \item[-]<3-> Must be large enough to capture all relevant scales of turbulence
      \end{itemize}
      
      \item<4-> \textbf{Grid spacing}
      \begin{itemize}
         \scriptsize
         \item[-]<4-> Must be so fine that most of the turbulent transport is resolved\\ (explicit transport $>>$ subgrid-scale transport)\\ $\rightarrow$ check profiles of resolved-scale and subgrid-scale fluxes
         \item[-]<5-> Results should not depend on grid spacing $\rightarrow$ carry out sensitivity study
      \end{itemize}
      
      \item<6-> \textbf{Simulation time}
      \begin{itemize}
         \scriptsize
         \item[-]<6-> Must be long enough that turbulence can develop $\rightarrow$ check the timeseries of velocity components or resolved-scale TKE
         \item[-]<7-> In case of horizontally homogeneous boundary conditions, onset of turbulence has to be triggered by imposing random disturbances to the flow $\rightarrow$ otherwise, there will be no turbulence!
         \item[-]<8-> Must be long enough to guarantee, that the mean flow has reached a (quasi-) stationary state $\rightarrow$ otherwise, turbulence statistics may be wrong
      \end{itemize}
      
      \item<9-> \textbf{Data analysis}
      \begin{itemize}
         \scriptsize
         \item[-]<9-> Data analysis should start only after onset of turbulence and after the mean flow has reached a (quasi-) stationary state
         \item[-]<10-> Getting correct mean flow profiles generally requires temporal averaging of the data (e.g. over the eddy-turnover timescale in the \\ convective boundary layer)
      \end{itemize}
      
   \end{itemize}
\end{frame}

% Folie 3
\begin{frame}
   \frametitle{PALM - General Steering Parameters - Overview (I)}
   
   Steering parameters can be classified into different groups:
   \begin{itemize}
      \footnotesize
      
      \item<2-> \textbf{Grid parameters (computational grid / processor grid)}
      \begin{itemize}
         \footnotesize
         \item[-]<2-> grid spacing, number of gridpoints, etc.
      \end{itemize}
      
      \item<3-> \textbf{Numerical parameters}
      \begin{itemize}
         \footnotesize
         \item[-]<3-> timestep scheme, advection scheme, etc.
      \end{itemize}
      
      \item<4-> \textbf{Boundary condition parameters}
      \begin{itemize}
         \footnotesize
         \item[-]<4-> horizontal (cyclic/non-cyclic), vertical (Prandtl-layer, free-slip condition, etc.)
      \end{itemize}
      
      \item<5-> \textbf{Initialization parameters}
      \begin{itemize}
         \footnotesize
         \item[-]<5-> kind of initial profiles, restart run, main rain (following pre-run)
      \end{itemize}   
      
      \item<6-> \textbf{Output parameters}
      \begin{itemize}
         \footnotesize
         \item[-]<6-> 1d, 2d, 3d output, output intervals, etc.
      \end{itemize}         
      
      \item<7-> \textbf{Physical parameters}
      \begin{itemize}
         \footnotesize
         \item[-]<7-> latitude, angular velocity, etc.
      \end{itemize} 
                
   \end{itemize}
   
\end{frame}

% Folie 4
\begin{frame}
   \frametitle{PALM - General Steering Parameters - Overview (II)}
   \footnotesize A complete alphabetical list of all parameters can be found under: \url{http://palm.muk.uni-hannover.de/wiki/doc/app/parlist}

   \begin{itemize}
      \footnotesize
      
      \item<2-> \textbf{General initialization methods}
      \begin{itemize}
         \footnotesize
         \item[-]<2-> controlled by parameter \texttt{initializing\_actions =}
      \end{itemize}
      
      \item<3-> \textbf{Initial run:}
      \begin{itemize}
         \footnotesize
         \item[-]<3-> \texttt{initializing\_actions = ‘set\_constant\_profiles’}\\
         constant, piecewise linear, profiles are used
         \item[-]<4-> \texttt{initializing\_actions = ‘set\_1d-model-profiles’}\\
wind/TKE-profiles are created by a 1d-model, embedded in PALM, using stationary temperature/humidity-profiles
         \item[-]<5-> \texttt{initializing\_actions = ‘cyclic\_fill’}\\
         3d-data from a pre-run (possibly with smaller domain size than the initial run) are used
         \item[-]<6-> \texttt{initializing\_actions = ‘by\_user’}\\
         user has to provide \textbf{all} initial settings
      \end{itemize}
      
      \item<7-> \textbf{Restart run:}
      \begin{itemize}
         \footnotesize
         \item[-]<7-> \texttt{initializing\_actions = ‘read\_restart\_data’}\\
         data from the previous run in the job-chain are used
      \end{itemize}
                
   \end{itemize}

\end{frame}

% Folie 5
\begin{frame}
   \frametitle{PALM - Initialization Example}

   \begin{itemize}
      \footnotesize
      \item<1-> \textbf{The following parameters have to be set for an initial atmosphere at rest with neutral temperature stratification and a capping inversion:}

      \quad \texttt{initializing\_actions = ‘set\_constant\_profiles’,}\\
      \quad \texttt{ug\_surface = 0.0, vg\_surface = 0.0,}\\
      \quad \texttt{pt\_surface = 300.0,}\\
      \quad \texttt{pt\_initial\_gradient = 0.0, 1.0,}\\
      \quad \texttt{pt\_initial\_gradient\_level = 0.0, 800.0,}\\
   \end{itemize}

   \begin{center}
      \onslide<2->
      \begin{tikzpicture}[scale=0.7]

         % define coordinates
         \coordinate (O) at (0,0) ;
         \coordinate (X) at (5,0) ;
         \coordinate (Z) at (0,5) ;
    
         % axis
         \draw[->, thick] (O) -- (X) ;
         \draw[->, thick] (O) -- (Z) ;
   
         % axis tics
         \draw[-] (1,-0.2) -- (1,0) ;
         \draw[-] (-0.2,0) -- (0,0) ;
         \draw[-] (-0.2,3) -- (0,3) ;
       
         % x-axis labels
         \node[below] at (5,-0.2) {$\theta$};
         \node[below] at (1,-0.2) {$\unit{300}{K}$};
   
         % z-axis labels
         \node[left] at (-0.2,5) {$z$};
         \node[left] at (-0.2,3) {$\unit{800}{m}$};
         \node[left] at (-0.2,0) {$\unit{0}{m}$};
    
         % theta lines
         \draw[red, ultra thick] (1,0) -- (1,3) ;
         \draw[red, ultra thick] (1,3) -- (3,4.4) ;

         % theta profiles
         \uncover<3->{
         \draw [decorate,decoration={brace,amplitude=10pt,mirror}] (1,0) -- (1,3) node[black,midway,xshift=0pt] {} ;
         \node at (3.6,1.5) {$\dfrac{\partial \theta}{\partial z} = \unit{0.0}{K} / \unit{100}{m}$} ;}
         \uncover<4->{
         \node at (4.7,3.5) {$\dfrac{\partial \theta}{\partial z} = \unit{1.0}{K} / \unit{100}{m}$} ;}
   
      \end{tikzpicture}
   \end{center}
   
\end{frame}

\end{document}