| [5] | 1 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> |
|---|
| 2 | <html><head> |
|---|
| 3 | <meta http-equiv="CONTENT-TYPE" content="text/html; charset=windows-1252"> |
|---|
| 4 | |
|---|
| 5 | <title>PALM chapter 3.5.2</title><meta name="GENERATOR" content="StarOffice 7 (Win32)"> |
|---|
| 6 | <meta name="AUTHOR" content="Siegfried Raasch"> |
|---|
| 7 | <meta name="CREATED" content="20040802;13321506"> |
|---|
| 8 | <meta name="CHANGED" content="20041112;14455666"> |
|---|
| 9 | <meta name="KEYWORDS" content="parallel LES model"> |
|---|
| 10 | <style> |
|---|
| 11 | <!-- |
|---|
| 12 | @page { size: 21cm 29.7cm } |
|---|
| 13 | --> |
|---|
| 14 | </style></head> |
|---|
| 15 | |
|---|
| 16 | <body dir="ltr" lang="en-US"> |
|---|
| 17 | <h3 style="line-height: 100%;"> 3.5.2 Definition of user-defined |
|---|
| 18 | parameters</h3> |
|---|
| 19 | <p style="line-height: 100%;">As for the model in general, also the |
|---|
| 20 | user-defined code will have to be steered by parameters. For each |
|---|
| 21 | run the model should to be able to read in current values of these |
|---|
| 22 | parameters. The declaration of user-defined parameters takes place in |
|---|
| 23 | the user-defined module <tt><font style="font-size: 10pt;" size="2">user</font></tt> |
|---|
| 24 | (located at the beginning of the file <tt><font style="font-size: 10pt;" size="2">user_interface.f90</font></tt>). |
|---|
| 25 | This module must be declared in all relevant user-defined routines via |
|---|
| 26 | a USE statement, in order to make the parameters available. </p> |
|---|
| 27 | <p style="line-height: 100%;">The user can assign values to the |
|---|
| 28 | user-defined parameters within the NAMELIST group <tt><font style="font-size: 11pt;" size="2">&userpar |
|---|
| 29 | <font size="3"><font face="Thorndale, serif">in the local file</font></font> |
|---|
| 30 | <a href="chapter_3.4.html#PARIN">PARIN</a></font></tt>. |
|---|
| 31 | This NAMELIST group must be located after the initialization |
|---|
| 32 | parameters and run parameters (<tt><font style="font-size: 10pt;" size="2">&inipar</font></tt><font style="font-size: 10pt;" size="2">, |
|---|
| 33 | </font><tt><font style="font-size: 10pt;" size="2">&d3par</font></tt>) |
|---|
| 34 | (see <a href="chapter_4.0.html">chapter |
|---|
| 35 | 4.0</a>). Before values of the user-defined parameters can be assigned, |
|---|
| 36 | the parameters must be declared within the appropriate NAMELIST |
|---|
| 37 | statement in the user-defined subroutine <tt><font style="font-size: 10pt;" size="2">user_parin</font></tt>. |
|---|
| 38 | </p> |
|---|
| 39 | <p style="line-height: 100%;">The following example illustrates the |
|---|
| 40 | procedure. The example assumes that the user declares a |
|---|
| 41 | LOGICAL variable named <tt><font style="font-size: 10pt;" size="2">abcd</font></tt> |
|---|
| 42 | for steering the user-defined code. This variable |
|---|
| 43 | must be declared in the module <tt>user</tt>: </p> |
|---|
| 44 | <ul> |
|---|
| 45 | <p style="line-height: 100%;"><tt><font style="font-size: 10pt;" size="2">LOGICAL:: abcd = .FALSE.</font></tt></p> |
|---|
| 46 | </ul> |
|---|
| 47 | <p style="line-height: 100%;">Pay attention that in this example a |
|---|
| 48 | default value (.FALSE.) is assigned to the variable and it will keep |
|---|
| 49 | this value if nothing else is assigned within the file <tt>PARIN</tt>. |
|---|
| 50 | In <tt><font style="font-size: 10pt;" size="2">user_parin</font> <font face="Thorndale, serif">the</font></tt> |
|---|
| 51 | NAMELIST must be extended by the name of the new variable: </p> |
|---|
| 52 | <ul> |
|---|
| 53 | <p style="line-height: 100%;"><tt><font style="font-size: 10pt;" size="2">NAMELIST /userpar/ abcd, data_output_user, region.</font></tt></p> |
|---|
| 54 | </ul> |
|---|
| 55 | <p style="line-height: 100%;">In the parameter file PARIN a value can |
|---|
| 56 | be assigned: </p> |
|---|
| 57 | <ul> |
|---|
| 58 | <p style="line-height: 100%;">. <br> |
|---|
| 59 | . <br> |
|---|
| 60 | <tt><font style="font-size: 10pt;" size="2">&userpar abcd = .T.,</font></tt><font style="font-size: 10pt;" size="2"> ...</font></p> |
|---|
| 61 | </ul> |
|---|
| 62 | <p style="line-height: 100%;">User defined parameters in the file PARIN |
|---|
| 63 | are |
|---|
| 64 | considered as run parameters, i.e. they must be specified again for |
|---|
| 65 | each restart run.</p> |
|---|
| 66 | <p style="line-height: 100%;">In each case the user should carry out |
|---|
| 67 | a control output of the parameter values, so |
|---|
| 68 | that their values during the respective model run are really known. For |
|---|
| 69 | this |
|---|
| 70 | purpose the user-defined subroutine <tt><font style="font-size: 10pt;" size="2">user_header</font></tt> |
|---|
| 71 | which writes into the files <a href="chapter_3.4.html#HEADER">HEADER</a> |
|---|
| 72 | and <a href="chapter_3.4.html#RUN_CONTROL">RUN_CONTROL</a> |
|---|
| 73 | is available. <br> |
|---|
| 74 | </p> |
|---|
| 75 | <hr> |
|---|
| 76 | <p style="line-height: 100%;"><br> |
|---|
| 77 | <font color="#000080"><font color="#000080"><a href="chapter_3.5.1.html"><font color="#000080"><img src="left.gif" name="Grafik1" align="bottom" border="2" height="32" width="32"></font></a><a href="index.html"><font color="#000080"><img src="up.gif" name="Grafik2" align="bottom" border="2" height="32" width="32"></font></a><a href="chapter_3.5.3.html"><font color="#000080"><img src="right.gif" name="Grafik3" align="bottom" border="2" height="32" width="32"></font></a><br> |
|---|
| 78 | </font></font></p> |
|---|
| 79 | <p style="line-height: 100%;"><span style="font-style: italic;">Last |
|---|
| 80 | change:</span> 24/03/06 (SR)<font color="#000080"><font color="#000080"><br> |
|---|
| 81 | </font></font></p> |
|---|
| 82 | </body></html> |
|---|
