[945] | 1 | % $Id: mrun_steering_parameters.tex 1080 2012-12-13 13:39:39Z keck $ |
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| 2 | \input{header_tmp.tex} |
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| 3 | %\input{../header_lectures.tex} |
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| 4 | |
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| 5 | \usepackage[utf8]{inputenc} |
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| 6 | \usepackage{ngerman} |
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[1080] | 7 | % \usepackage{pgf} |
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[945] | 8 | \usetheme{Dresden} |
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| 9 | \usepackage{subfigure} |
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| 10 | \usepackage{units} |
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| 11 | \usepackage{multimedia} |
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| 12 | \usepackage{hyperref} |
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| 13 | \newcommand{\event}[1]{\newcommand{\eventname}{#1}} |
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| 14 | \usepackage{xmpmulti} |
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| 15 | \usepackage{tikz} |
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| 16 | \usetikzlibrary{shapes,arrows,positioning} |
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| 17 | \usetikzlibrary{decorations.markings} %neues paket |
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| 18 | \usetikzlibrary{decorations.pathreplacing} %neues paket |
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| 19 | \def\Tiny{\fontsize{4pt}{4pt}\selectfont} |
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| 20 | \usepackage{amsmath} |
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| 21 | \usepackage{amssymb} |
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| 22 | \usepackage{multicol} |
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| 23 | \usepackage{pdfcomment} |
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| 24 | \usepackage{graphicx} |
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| 25 | \usepackage{listings} |
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| 26 | \lstset{showspaces=false,language=fortran,basicstyle= |
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| 27 | \ttfamily,showstringspaces=false,captionpos=b} |
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| 28 | |
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| 29 | \institute{Institut fÌr Meteorologie und Klimatologie, Leibniz UniversitÀt Hannover} |
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| 30 | \date{last update: \today} |
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| 31 | \event{PALM Seminar} |
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| 32 | \setbeamertemplate{navigation symbols}{} |
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| 33 | |
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| 34 | \setbeamertemplate{footline} |
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| 35 | { |
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| 36 | \begin{beamercolorbox}[rightskip=-0.1cm]& |
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| 37 | {\includegraphics[height=0.65cm]{imuk_logo.pdf}\hfill \includegraphics[height=0.65cm]{luh_logo.pdf}} |
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| 38 | \end{beamercolorbox} |
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| 39 | \begin{beamercolorbox}[ht=2.5ex,dp=1.125ex, |
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| 40 | leftskip=.3cm,rightskip=0.3cm plus1fil]{title in head/foot} |
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| 41 | {\leavevmode{\usebeamerfont{author in head/foot}\insertshortauthor} \hfill \eventname \hfill \insertframenumber \; / \inserttotalframenumber} |
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| 42 | \end{beamercolorbox} |
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| 43 | \begin{beamercolorbox}[colsep=1.5pt]{lower separation line foot} |
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| 44 | \end{beamercolorbox} |
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| 45 | } |
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| 46 | %\logo{\includegraphics[width=0.3\textwidth]{luhimuk_logo.pdf}} |
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| 47 | |
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| 48 | \title[General Steering Parameters]{General Steering Parameters} |
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| 49 | \author{Siegfried Raasch} |
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| 50 | |
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| 51 | \begin{document} |
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| 52 | |
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| 53 | % Folie 1 |
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| 54 | \begin{frame} |
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| 55 | \titlepage |
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| 56 | \end{frame} |
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| 57 | |
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| 58 | \section{General Steering Parameters} |
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| 59 | \subsection{General Steering Parameters} |
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| 60 | |
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| 61 | % Folie 2 |
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| 62 | \begin{frame} |
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| 63 | \frametitle{General Hints for Carrying out LES} |
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| 64 | |
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| 65 | |
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| 66 | \begin{itemize} |
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| 67 | \scriptsize |
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| 68 | |
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[973] | 69 | \item<2-> \textbf{Domain size} |
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[945] | 70 | \begin{itemize} |
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| 71 | \scriptsize |
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| 72 | \item[-]<3-> Must be large enough to capture all relevant scales of turbulence |
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| 73 | \end{itemize} |
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| 74 | |
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[973] | 75 | \item<4-> \textbf{Grid spacing} |
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[945] | 76 | \begin{itemize} |
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| 77 | \scriptsize |
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[973] | 78 | \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 |
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[945] | 79 | \item[-]<5-> Results should not depend on grid spacing $\rightarrow$ carry out sensitivity study |
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| 80 | \end{itemize} |
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| 81 | |
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[973] | 82 | \item<6-> \textbf{Simulation time} |
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[945] | 83 | \begin{itemize} |
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| 84 | \scriptsize |
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| 85 | \item[-]<6-> Must be long enough that turbulence can develop $\rightarrow$ check the timeseries of velocity components or resolved-scale TKE |
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| 86 | \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! |
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| 87 | \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 |
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| 88 | \end{itemize} |
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| 89 | |
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[973] | 90 | \item<9-> \textbf{Data analysis} |
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[945] | 91 | \begin{itemize} |
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| 92 | \scriptsize |
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| 93 | \item[-]<9-> Data analysis should start only after onset of turbulence and after the mean flow has reached a (quasi-) stationary state |
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| 94 | \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) |
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| 95 | \end{itemize} |
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| 96 | |
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| 97 | \end{itemize} |
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| 98 | \end{frame} |
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| 99 | |
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| 100 | % Folie 3 |
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| 101 | \begin{frame} |
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| 102 | \frametitle{PALM - General Steering Parameters - Overview (I)} |
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| 103 | |
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| 104 | Steering parameters can be classified into different groups: |
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| 105 | \begin{itemize} |
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| 106 | \footnotesize |
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| 107 | |
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[973] | 108 | \item<2-> \textbf{Grid parameters (computational grid / processor grid)} |
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[945] | 109 | \begin{itemize} |
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| 110 | \footnotesize |
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| 111 | \item[-]<2-> grid spacing, number of gridpoints, etc. |
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| 112 | \end{itemize} |
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| 113 | |
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[973] | 114 | \item<3-> \textbf{Numerical parameters} |
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[945] | 115 | \begin{itemize} |
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| 116 | \footnotesize |
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| 117 | \item[-]<3-> timestep scheme, advection scheme, etc. |
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| 118 | \end{itemize} |
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| 119 | |
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[973] | 120 | \item<4-> \textbf{Boundary condition parameters} |
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[945] | 121 | \begin{itemize} |
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| 122 | \footnotesize |
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| 123 | \item[-]<4-> horizontal (cyclic/non-cyclic), vertical (Prandtl-layer, free-slip condition, etc.) |
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| 124 | \end{itemize} |
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| 125 | |
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[973] | 126 | \item<5-> \textbf{Initialization parameters} |
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[945] | 127 | \begin{itemize} |
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| 128 | \footnotesize |
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[1080] | 129 | \item[-]<5-> kind of initial profiles, restart run, main run (following pre-run) |
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[945] | 130 | \end{itemize} |
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| 131 | |
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[973] | 132 | \item<6-> \textbf{Output parameters} |
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[945] | 133 | \begin{itemize} |
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| 134 | \footnotesize |
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| 135 | \item[-]<6-> 1d, 2d, 3d output, output intervals, etc. |
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| 136 | \end{itemize} |
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| 137 | |
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[973] | 138 | \item<7-> \textbf{Physical parameters} |
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[945] | 139 | \begin{itemize} |
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| 140 | \footnotesize |
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| 141 | \item[-]<7-> latitude, angular velocity, etc. |
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| 142 | \end{itemize} |
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| 143 | |
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| 144 | \end{itemize} |
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| 145 | |
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| 146 | \end{frame} |
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| 147 | |
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| 148 | % Folie 4 |
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| 149 | \begin{frame} |
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| 150 | \frametitle{PALM - General Steering Parameters - Overview (II)} |
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| 151 | \footnotesize A complete alphabetical list of all parameters can be found under: \url{http://palm.muk.uni-hannover.de/wiki/doc/app/parlist} |
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| 152 | |
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| 153 | \begin{itemize} |
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| 154 | \footnotesize |
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| 155 | |
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[973] | 156 | \item<2-> \textbf{General initialization methods} |
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[945] | 157 | \begin{itemize} |
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| 158 | \footnotesize |
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| 159 | \item[-]<2-> controlled by parameter \texttt{initializing\_actions =} |
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| 160 | \end{itemize} |
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| 161 | |
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[973] | 162 | \item<3-> \textbf{Initial run:} |
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[945] | 163 | \begin{itemize} |
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| 164 | \footnotesize |
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| 165 | \item[-]<3-> \texttt{initializing\_actions = âset\_constant\_profilesâ}\\ |
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| 166 | constant, piecewise linear, profiles are used |
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| 167 | \item[-]<4-> \texttt{initializing\_actions = âset\_1d-model-profilesâ}\\ |
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| 168 | wind/TKE-profiles are created by a 1d-model, embedded in PALM, using stationary temperature/humidity-profiles |
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| 169 | \item[-]<5-> \texttt{initializing\_actions = âcyclic\_fillâ}\\ |
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| 170 | 3d-data from a pre-run (possibly with smaller domain size than the initial run) are used |
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| 171 | \item[-]<6-> \texttt{initializing\_actions = âby\_userâ}\\ |
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[973] | 172 | user has to provide \textbf{all} initial settings |
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[945] | 173 | \end{itemize} |
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| 174 | |
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[973] | 175 | \item<7-> \textbf{Restart run:} |
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[945] | 176 | \begin{itemize} |
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| 177 | \footnotesize |
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| 178 | \item[-]<7-> \texttt{initializing\_actions = âread\_restart\_dataâ}\\ |
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| 179 | data from the previous run in the job-chain are used |
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| 180 | \end{itemize} |
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| 181 | |
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| 182 | \end{itemize} |
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| 183 | |
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| 184 | \end{frame} |
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| 185 | |
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| 186 | % Folie 5 |
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| 187 | \begin{frame} |
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| 188 | \frametitle{PALM - Initialization Example} |
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| 189 | |
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| 190 | \begin{itemize} |
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| 191 | \footnotesize |
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[973] | 192 | \item<1-> \textbf{The following parameters have to be set for an initial atmosphere at rest with neutral temperature stratification and a capping inversion:} |
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[945] | 193 | |
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| 194 | \quad \texttt{initializing\_actions = âset\_constant\_profilesâ,}\\ |
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| 195 | \quad \texttt{ug\_surface = 0.0, vg\_surface = 0.0,}\\ |
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| 196 | \quad \texttt{pt\_surface = 300.0,}\\ |
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| 197 | \quad \texttt{pt\_initial\_gradient = 0.0, 1.0,}\\ |
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| 198 | \quad \texttt{pt\_initial\_gradient\_level = 0.0, 800.0,}\\ |
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| 199 | \end{itemize} |
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| 200 | |
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| 201 | \begin{center} |
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| 202 | \onslide<2-> |
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| 203 | \begin{tikzpicture}[scale=0.7] |
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| 204 | |
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| 205 | % define coordinates |
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| 206 | \coordinate (O) at (0,0) ; |
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| 207 | \coordinate (X) at (5,0) ; |
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| 208 | \coordinate (Z) at (0,5) ; |
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| 209 | |
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| 210 | % axis |
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| 211 | \draw[->, thick] (O) -- (X) ; |
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| 212 | \draw[->, thick] (O) -- (Z) ; |
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| 213 | |
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| 214 | % axis tics |
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| 215 | \draw[-] (1,-0.2) -- (1,0) ; |
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| 216 | \draw[-] (-0.2,0) -- (0,0) ; |
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| 217 | \draw[-] (-0.2,3) -- (0,3) ; |
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| 218 | |
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| 219 | % x-axis labels |
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| 220 | \node[below] at (5,-0.2) {$\theta$}; |
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| 221 | \node[below] at (1,-0.2) {$\unit{300}{K}$}; |
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| 222 | |
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| 223 | % z-axis labels |
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| 224 | \node[left] at (-0.2,5) {$z$}; |
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| 225 | \node[left] at (-0.2,3) {$\unit{800}{m}$}; |
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| 226 | \node[left] at (-0.2,0) {$\unit{0}{m}$}; |
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| 227 | |
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| 228 | % theta lines |
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| 229 | \draw[red, ultra thick] (1,0) -- (1,3) ; |
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| 230 | \draw[red, ultra thick] (1,3) -- (3,4.4) ; |
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| 231 | |
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| 232 | % theta profiles |
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| 233 | \uncover<3->{ |
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| 234 | \draw [decorate,decoration={brace,amplitude=10pt,mirror}] (1,0) -- (1,3) node[black,midway,xshift=0pt] {} ; |
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| 235 | \node at (3.6,1.5) {$\dfrac{\partial \theta}{\partial z} = \unit{0.0}{K} / \unit{100}{m}$} ;} |
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| 236 | \uncover<4->{ |
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| 237 | \node at (4.7,3.5) {$\dfrac{\partial \theta}{\partial z} = \unit{1.0}{K} / \unit{100}{m}$} ;} |
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| 238 | |
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| 239 | \end{tikzpicture} |
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| 240 | \end{center} |
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| 241 | |
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| 242 | \end{frame} |
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| 243 | |
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| 244 | \end{document} |
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