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