| [5] | 1 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> |
|---|
| 2 | <html> |
|---|
| 3 | <head> |
|---|
| 4 | <meta http-equiv="CONTENT-TYPE" |
|---|
| 5 | content="text/html; charset=windows-1252"> |
|---|
| 6 | <title>PALM chapter 3.5.3</title> |
|---|
| 7 | <meta name="GENERATOR" content="StarOffice 7 (Win32)"> |
|---|
| 8 | <meta name="AUTHOR" content="Siegfried Raasch"> |
|---|
| 9 | <meta name="CREATED" content="20040802;14001660"> |
|---|
| 10 | <meta name="CHANGED" content="20041112;14483720"> |
|---|
| 11 | <meta name="KEYWORDS" content="parallel LES model"> |
|---|
| 12 | <style> |
|---|
| 13 | <!-- |
|---|
| 14 | @page { size: 21cm 29.7cm } |
|---|
| 15 | --> |
|---|
| 16 | </style> |
|---|
| 17 | </head> |
|---|
| 18 | <body dir="ltr" lang="en-US"> |
|---|
| 19 | <h3 style="line-height: 100%;">3.5.3 Definition of user-defined |
|---|
| 20 | subdomains</h3> |
|---|
| 21 | <p style="line-height: 100%;">By default, the values of the time |
|---|
| 22 | series (saved in local file <a href="chapter_3.4.html#PLOTTS_DATA">PLOTTS_DATA</a>) |
|---|
| 23 | and the horizontally averaged vertical profiles (saved in local files |
|---|
| 24 | <a href="chapter_3.4.html#PLOT1D_DATA">PLOT1D_DATA</a> |
|---|
| 25 | and <a href="chapter_3.4.html#LIST_PROFIL">LIST_PROFIL</a>) |
|---|
| 26 | always refer to the total model domain. Independently, up to 9 time |
|---|
| 27 | series or profiles for different user-defined subdomains can be |
|---|
| 28 | computed and plotted additionally. Steering in principle is done |
|---|
| 29 | via the initialization parameter <a |
|---|
| 30 | href="chapter_4.1.html#statistic_regions">statistic_regions</a>. |
|---|
| 31 | </p> |
|---|
| 32 | <p style="line-height: 100%;">The exact definition of these subdomains |
|---|
| 33 | has to be made by the user within the user-defined subroutine |
|---|
| 34 | <tt><font style="font-size: 10pt;" size="2">init_user</font></tt>. The |
|---|
| 35 | subdomains are defined with a mask array named <tt><font |
|---|
| 36 | style="font-size: 10pt;" size="2">rmask</font></tt>, |
|---|
| 37 | which has to be given the value 1.0 for all horizontal grid points |
|---|
| 38 | belonging to |
|---|
| 39 | the user-defined subdomain and the value 0.0, where grid points do not |
|---|
| 40 | belong |
|---|
| 41 | to the user-defined subdomain. In the model <tt><font size="2">rmask</font></tt> |
|---|
| 42 | is |
|---|
| 43 | declared as: </p> |
|---|
| 44 | <ul> |
|---|
| 45 | <p style="line-height: 100%;"><tt><font style="font-size: 10pt;" |
|---|
| 46 | size="2">REAL :: rmask (nys-1:nyn+1,nxl-1,nxr+1,0:9) .</font></tt></p> |
|---|
| 47 | </ul> |
|---|
| 48 | <p style="line-height: 100%;">The first two indices are the grid point |
|---|
| 49 | indices in y and x-direction. With parallel model runs <tt><font |
|---|
| 50 | style="font-size: 10pt;" size="2">nxl</font></tt><font |
|---|
| 51 | style="font-size: 10pt;" size="2">, |
|---|
| 52 | </font><tt><font style="font-size: 10pt;" size="2">nxr</font></tt><font |
|---|
| 53 | style="font-size: 10pt;" size="2">, |
|---|
| 54 | </font><tt><font style="font-size: 10pt;" size="2">nys</font></tt><font |
|---|
| 55 | style="font-size: 10pt;" size="2"> |
|---|
| 56 | <font size="3">and</font> </font><tt><font style="font-size: 10pt;" |
|---|
| 57 | size="2">nyn</font></tt> |
|---|
| 58 | are the array bounds of the respective subdomain (don't confuse this |
|---|
| 59 | with the user-defined subdomain!) on the |
|---|
| 60 | respective processor. With runs on one processor <tt><font |
|---|
| 61 | style="font-size: 10pt;" size="2">nys</font></tt><font |
|---|
| 62 | style="font-size: 10pt;" size="2"> |
|---|
| 63 | = </font><tt><font style="font-size: 10pt;" size="2">nxl</font></tt><font |
|---|
| 64 | style="font-size: 10pt;" size="2"> |
|---|
| 65 | = 0</font> and <font style="font-size: 10pt;" size="2"><font |
|---|
| 66 | face="Cumberland, monospace">nxr |
|---|
| 67 | =</font> </font><a href="chapter_4.1.html#nx">nx</a> |
|---|
| 68 | and <font style="font-size: 10pt;" size="2"><font |
|---|
| 69 | face="Cumberland, monospace">nyn |
|---|
| 70 | =</font></font> <a href="chapter_4.1.html#ny">ny</a>. |
|---|
| 71 | The third index determines the user-defined subdomain. The total model |
|---|
| 72 | domain |
|---|
| 73 | carries the index 0, the user-defined subdomains have the values 1 to |
|---|
| 74 | 9. </p> |
|---|
| 75 | <p style="line-height: 100%;">The following example should illustrate |
|---|
| 76 | this. Two subdomains are defined by the user. The first is determined |
|---|
| 77 | by all grid |
|---|
| 78 | points which lie within a circle whose center is equal to the |
|---|
| 79 | (horizontal) center of the model domain and whose diameter is equal |
|---|
| 80 | to half of the total horizontal domain size (square total domain |
|---|
| 81 | assumed). |
|---|
| 82 | The second subdomain should be defined by all points outside of this |
|---|
| 83 | domain. This may be obtained by the following lines of code in <tt><font |
|---|
| 84 | style="font-size: 10pt;" size="2">user_init</font></tt>: |
|---|
| 85 | </p> |
|---|
| 86 | <ul> |
|---|
| 87 | <p style="line-height: 100%;"><tt><font style="font-size: 10pt;" |
|---|
| 88 | size="2"><font face="Cumberland, monospace">USE |
|---|
| 89 | grid_variables</font></font></tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 90 | face="Cumberland, monospace"> <br> |
|---|
| 91 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 92 | face="Cumberland, monospace">USE indices</font></font></tt><font |
|---|
| 93 | style="font-size: 10pt;" size="2"><font face="Cumberland, monospace"> <br> |
|---|
| 94 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 95 | face="Cumberland, monospace">USE statistics</font></font></tt><font |
|---|
| 96 | style="font-size: 10pt;" size="2"><font face="Cumberland, monospace"> <br> |
|---|
| 97 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 98 | face="Cumberland, monospace">.</font></font></tt><font |
|---|
| 99 | style="font-size: 10pt;" size="2"><font face="Cumberland, monospace"><br> |
|---|
| 100 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 101 | face="Cumberland, monospace">.</font></font></tt><font |
|---|
| 102 | style="font-size: 10pt;" size="2"><font face="Cumberland, monospace"><br> |
|---|
| 103 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 104 | face="Cumberland, monospace">.</font></font></tt><font |
|---|
| 105 | style="font-size: 10pt;" size="2"><font face="Cumberland, monospace"><br> |
|---|
| 106 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 107 | face="Cumberland, monospace">disc_center_x = dx * (nx + 1)/2</font></font></tt><font |
|---|
| 108 | style="font-size: 10pt;" size="2"><font face="Cumberland, monospace"> <br> |
|---|
| 109 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 110 | face="Cumberland, monospace">disc_center_y = dy * (ny + 1)/2</font></font></tt><font |
|---|
| 111 | style="font-size: 10pt;" size="2"><font face="Cumberland, monospace"> <br> |
|---|
| 112 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 113 | face="Cumberland, monospace">disc_radius = 0.5 * disc_center_x</font></font></tt><font |
|---|
| 114 | style="font-size: 10pt;" size="2"><font face="Cumberland, monospace"> <br> |
|---|
| 115 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 116 | face="Cumberland, monospace">DO i = nxl-1, nxr+1</font></font></tt><font |
|---|
| 117 | style="font-size: 10pt;" size="2"><font face="Cumberland, monospace"> <br> |
|---|
| 118 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 119 | face="Cumberland, monospace"> x = i * dx</font></font></tt><br> |
|---|
| 120 | <tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 121 | face="Cumberland, monospace"> DO j = nys-1, nyn+1</font></font></tt><font |
|---|
| 122 | style="font-size: 10pt;" size="2"><font face="Cumberland, monospace"> <br> |
|---|
| 123 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 124 | face="Cumberland, monospace"> y = j * dy</font></font></tt><font |
|---|
| 125 | style="font-size: 10pt;" size="2"><font face="Cumberland, monospace"><br> |
|---|
| 126 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 127 | face="Cumberland, monospace"> |
|---|
| 128 | radial_distance = SQRT( ( x - disc_center_x )**2 + &</font></font></tt><font |
|---|
| 129 | style="font-size: 10pt;" size="2"><font face="Cumberland, monospace"> <br> |
|---|
| 130 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 131 | face="Cumberland, monospace"> |
|---|
| 132 | ( y - disc_center_y )**2 )</font></font></tt><font |
|---|
| 133 | style="font-size: 10pt;" size="2"><font face="Cumberland, monospace"> <br> |
|---|
| 134 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 135 | face="Cumberland, monospace"> IF ( radial_distance |
|---|
| 136 | > disc_radius ) THEN</font></font></tt><font |
|---|
| 137 | style="font-size: 10pt;" size="2"><font face="Cumberland, monospace"><br> |
|---|
| 138 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 139 | face="Cumberland, monospace"> |
|---|
| 140 | rmask(j,i,1) = 0.0</font></font></tt><font style="font-size: 10pt;" |
|---|
| 141 | size="2"><font face="Cumberland, monospace"><br> |
|---|
| 142 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 143 | face="Cumberland, monospace"> |
|---|
| 144 | rmask(j,i,2) = 1.0</font></font></tt><font style="font-size: 10pt;" |
|---|
| 145 | size="2"><font face="Cumberland, monospace"><br> |
|---|
| 146 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 147 | face="Cumberland, monospace"> ELSE</font></font></tt><font |
|---|
| 148 | style="font-size: 10pt;" size="2"><font face="Cumberland, monospace"><br> |
|---|
| 149 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 150 | face="Cumberland, monospace"> |
|---|
| 151 | rmask(j,i,1) = 1.0</font></font></tt><font style="font-size: 10pt;" |
|---|
| 152 | size="2"><font face="Cumberland, monospace"><br> |
|---|
| 153 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 154 | face="Cumberland, monospace"> |
|---|
| 155 | rmask(j,i,2) = 0.0</font></font></tt><font style="font-size: 10pt;" |
|---|
| 156 | size="2"><font face="Cumberland, monospace"><br> |
|---|
| 157 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 158 | face="Cumberland, monospace"> ENDIF</font></font></tt><font |
|---|
| 159 | style="font-size: 10pt;" size="2"><font face="Cumberland, monospace"> <br> |
|---|
| 160 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 161 | face="Cumberland, monospace"> ENDDO</font></font></tt><font |
|---|
| 162 | style="font-size: 10pt;" size="2"><font face="Cumberland, monospace"><br> |
|---|
| 163 | </font></font><tt><font style="font-size: 10pt;" size="2"><font |
|---|
| 164 | face="Cumberland, monospace">ENDDO</font></font></tt></p> |
|---|
| 165 | </ul> |
|---|
| 166 | <p style="line-height: 100%;">The module <span |
|---|
| 167 | style="font-family: monospace;">statistics</span> must be used, |
|---|
| 168 | because it contains <span style="font-family: monospace;">rmask</span> |
|---|
| 169 | and the modules <span style="font-family: monospace;">grid_variables</span> |
|---|
| 170 | and <span style="font-family: monospace;">indices</span> are |
|---|
| 171 | necessary in this example, because grid spacing and indices are used. |
|---|
| 172 | All array elements of <span style="font-family: monospace;">rmask</span> |
|---|
| 173 | (<span style="font-family: monospace;">rmask(:,:,:)</span>) are preset |
|---|
| 174 | by the model with 1.0. In no case this assignment must be |
|---|
| 175 | changed for the total domain (<span style="font-family: monospace;">rmask(:,:,0)</span>)! |
|---|
| 176 | Computations and output for the user-defined subdomains only take place |
|---|
| 177 | if |
|---|
| 178 | the user sets <a href="chapter_4.1.html#statistic_regions">statistic_regions</a> |
|---|
| 179 | ≥ <i>1</i>. Beyond that, names for the user-defined subdomains can be |
|---|
| 180 | assigned |
|---|
| 181 | via the initialization parameter <a href="chapter_4.3.html#region">region</a>. |
|---|
| 182 | Output of the names of the selected user-defined subdomains happens in |
|---|
| 183 | the local files <a href="chapter_3.4.html#HEADER">HEADER</a> |
|---|
| 184 | and <a href="chapter_3.4.html#RUN_CONTROL">RUN_CONTROL</a> |
|---|
| 185 | within the user-defined subroutine <tt><font style="font-size: 10pt;" |
|---|
| 186 | size="2">user_header</font></tt>. |
|---|
| 187 | <br> |
|---|
| 188 | </p> |
|---|
| 189 | <hr> |
|---|
| 190 | <p style="line-height: 100%;"><br> |
|---|
| 191 | <font color="#000080"><font color="#000080"><a href="chapter_3.5.2.html"><font |
|---|
| 192 | color="#000080"><img src="left.gif" name="Grafik1" align="bottom" |
|---|
| 193 | border="2" height="32" width="32"></font></a><a href="index.html"><font |
|---|
| 194 | color="#000080"><img src="up.gif" name="Grafik2" align="bottom" |
|---|
| 195 | border="2" height="32" width="32"></font></a><a |
|---|
| 196 | href="chapter_3.5.4.html"><font color="#000080"><img src="right.gif" |
|---|
| 197 | name="Grafik3" align="bottom" border="2" height="32" width="32"></font></a></font></font></p> |
|---|
| 198 | <p style="line-height: 100%;"><i>Last change: </i> 15/04/05 (SR)</p> |
|---|
| 199 | </body> |
|---|
| 200 | </html> |
|---|
