node24.html

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  TABLE B4(NDSM,NTDL) PAGINATED IN 1 OR MORE PAGES
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  PAGE     1
  ----------
 ------------------------------------------------------
 | NODE   | DOF | GLOBAL DOF|  LOAD CASE(S)           |
 ------------------------------------------------------
 |      1 |   1 |        1  |    0.000000    
 |      2 |   1 |        2  |   -0.500678E-03
 |      3 |   1 |        3  |    0.496935E-03
 |      4 |   1 |        4  |   -0.374275E-05
 |      5 |   1 |        5  |    0.138654E-02
 |      6 |   1 |        6  |    0.632771E-03
 |      7 |   1 |        7  |    0.175291E-02
 |      8 |   1 |        8  |    0.746048E-03
 |      9 |   1 |        9  |    0.206836E-02
 |     10 |   1 |       10  |    0.794842E-03

 TABLE B4(NDSM,NTDL) NUMBER :      4
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  TABLE B4(NDSM,NTDL) PAGINATED IN 1 OR MORE PAGES
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  PAGE     1
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 | NODE   | DOF | GLOBAL DOF|  LOAD CASE(S)           |
 ------------------------------------------------------
 |      1 |   1 |        1  |    0.000000    
 |      2 |   1 |        2  |   -0.506843E-03
 |      3 |   1 |        3  |    0.502850E-03
 |      4 |   1 |        4  |   -0.399328E-05
 |      5 |   1 |        5  |    0.140208E-02
 |      6 |   1 |        6  |    0.640137E-03
 |      7 |   1 |        7  |    0.177119E-02
 |      8 |   1 |        8  |    0.754146E-03
 |      9 |   1 |        9  |    0.208460E-02
 |     10 |   1 |       10  |    0.801812E-03
</PRE>
<P>
<P>
<P>
<H2><A NAME=SECTION04336000000000000000>3.3.6 Post-processing</A></H2>
<P>
<P>
<P>
The procedures for plotting the velocities, isobars, and streamlines, are described below:
<P>
<OL><LI> <b> Plot of the velocities</b>
<P>
<P>
<P>
The Q2 velocity values are stored in file <b> T6VITE</b>.        
The plot of the velocity distribution is generated by the preprocessor <b> TRMCXX</b> [<A HREF="node65.html#mod_96"><A NAME=tex2html41 HREF="../Guide6/welcome.html">MODULEF User Guide - 6</A></A>] 
(see figure <A HREF="node24.html#fig21">3.11</A>). Before execution of <b> TRMCXX</b> it is necessary to create the data structures 
<b> MAIL</b> and  <b> COOR</b> corresponding to the <b> NOPO</b> data structure 
for the Q2 mesh.
<P>
<P>
<P>
<b> Step 1:</b> 
<TABLE COLS=3 RULES=GROUPS>
<COL ALIGN=LEFT><COL ALIGN=LEFT><COL ALIGN=LEFT>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>
Call preprocessor: </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> COMAXX</b>  </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
</TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
Specify input data file:        </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> D6COMA.D</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> ... in library <b> TESD</b> </TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>   
Output data structures:         </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6MAIL</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>         
                                </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6COOR</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
</TABLE>
<P>
<b> Step 2:</b> 
<TABLE COLS=2 RULES=GROUPS>
<COL ALIGN=LEFT><COL ALIGN=LEFT>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>
Call preprocessor: </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> TRMCXX</b>  </TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
</TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
Specify input data structures:  </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6MAIL</b> </TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>  
                                </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6COOR</b> </TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
                                </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6VITE</b> </TD></TR>
</TABLE>
<P>
<P><A NAME=3230>&#160;</A><IMG BORDER=0 ALIGN=BOTTOM ALT="" SRC="img264.gif">
<BR><STRONG>Figure 3.11:</STRONG> <i> Velocity distribution (<b> TRMCXX</b>)</i><A NAME=fig21>&#160;</A><BR>
<P>
<P>
<LI> <b> Plot of the isobars</b>
<P>
<P>
<P>
The values of the Q2 pressure are stored in file <b> T6PRQ2</b>.  
A plot of the isobars is generated by preprocessor <b> TRMCXX</b> [<A HREF="node65.html#mod_96"><A NAME=tex2html41 HREF="../Guide6/welcome.html">MODULEF User Guide - 6</A></A>] (see figure <A HREF="node24.html#fig22">3.12</A>).
As before, data structures <b> MAIL</b> and <b> COOR</b> are necessary as input in preprocessor <b> TRMCXX</b>.
<P>
<P>
<P>
<TABLE COLS=2 RULES=GROUPS>
<COL ALIGN=LEFT><COL ALIGN=LEFT>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>
Call preprocessor: </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> TRMCXX</b>  </TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
</TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
Specify input data structures:  </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6MAIL</b> </TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>  
                                </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6COOR</b> </TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
                                </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6PRQ2</b> </TD></TR>
</TABLE>
<P>
<P><A NAME=3240>&#160;</A><IMG BORDER=0 ALIGN=BOTTOM ALT="" SRC="img265.gif">
<BR><STRONG>Figure 3.12:</STRONG> <i> Isobars (<b> TRMCXX</b>)</i><A NAME=fig22>&#160;</A><BR>
<P>
<P>
<LI> <b> Plot of the streamlines</b>
<P>
<P>
<P>
The streamlines are calculated using the velocity values by solving the following system:
<P>
<DIV ALIGN=center><IMG BORDER=0 ALIGN=MIDDLE ALT="" SRC="img266.gif"></DIV>
<P>
where
<DL COMPACT><DT><IMG BORDER=0 ALIGN=MIDDLE ALT="" SRC="img267.gif">
<DD> is the streamline function,
  <DT><IMG BORDER=0 ALIGN=BOTTOM ALT="" SRC="img268.gif">
<DD> is the velocity, and
   <DT><IMG BORDER=0 ALIGN=BOTTOM ALT="" SRC="img269.gif">
<DD> is the tangent.
<P>
 </DL>
<P>
<b> Remark:</b> For the case where <IMG BORDER=0 ALIGN=BOTTOM ALT="" SRC="img270.gif"> on a section <IMG BORDER=0 ALIGN=MIDDLE ALT="" SRC="img271.gif"> of the boundary, we may impose that
<IMG BORDER=0 ALIGN=MIDDLE ALT="" SRC="img272.gif"> on <IMG BORDER=0 ALIGN=MIDDLE ALT="" SRC="img271.gif"> and the preceding Neumann condition  on the remainder of the boundary.
<P>
A better conditioned system is obtained admitting one unique solution. The system is solved by the same
preprocessors as was used in the solution of the thermal problem with a <b> QUAD 2Q2D</b> element:
<P>
<P>
<P>
<b> Step 1:</b> Interpolation [<A HREF="node65.html#mod_13">13</A>]
<P>
<TABLE COLS=3 RULES=GROUPS>
<COL ALIGN=LEFT><COL ALIGN=LEFT><COL ALIGN=LEFT>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>
Call preprocessor: </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> COMAXX</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>  
Element type:                   </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> QUAD 2Q2D</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
</TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>                                   
Specify input data file:        </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> D6COMA.D</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> ... in library <b> TESD</b> </TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
Output data structures:         </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6MAIL</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
                                </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6COOR</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
</TABLE>
<P>
<P>
<P>
<b> Step 2:</b> Description of data [<A HREF="node65.html#mod_14">14</A>]
<P>
<TABLE COLS=3 RULES=GROUPS>
<COL ALIGN=LEFT><COL ALIGN=LEFT><COL ALIGN=LEFT>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>
Call preprocessor:         </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> FOMIXX</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>  
</TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>                                   
Specify input data file:   </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> D6FOMI.D</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> ... in library <b> TESD</b> </TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
Output data structures:    </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6FORC</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
                           </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6MILI</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
</TABLE>
<P>
<P>
<P>
<b> Step 3:</b> Calculation of the element arrays [<A HREF="node65.html#mod_14">14</A>]
<P>
<TABLE COLS=3 RULES=GROUPS>
<COL ALIGN=LEFT><COL ALIGN=LEFT><COL ALIGN=LEFT>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>
Execute program:               </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> D6CAXX</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> ... in library <b> TEST</b> </TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
</TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
Specify input data structures: </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6MAIL</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
                               </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6COOR</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
                               </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6MILI</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
                               </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6FORC</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
                               </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6VITE</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
Output data structure:         </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6TAE</b>  </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
</TABLE>
<P>
<P>
<P>
<b> Step 4:</b> Description of boundary conditions [<A HREF="node65.html#mod_18">18</A>]
<P>
<TABLE COLS=3 RULES=GROUPS>
<COL ALIGN=LEFT><COL ALIGN=LEFT><COL ALIGN=LEFT>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>
Call preprocessor:        </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> COBDXX</b>  </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
</TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
Specify input data file:  </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> D6BDCL.D</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> ... in library <b> TESD</b></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
Output data structure:    </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6BDCL</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
</TABLE>
<P>
<b> Step 5:</b> Solution [<A HREF="node65.html#mod_5"><A NAME=tex2html39 HREF="../Guide5/welcome.html">MODULEF User Guide - 5</A></A>]
<P>
<TABLE COLS=3 RULES=GROUPS>
<COL ALIGN=LEFT><COL ALIGN=LEFT><COL ALIGN=LEFT>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>
Call preprocessor:        </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> CHOLXX</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
</TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
Specify input data file:  </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> D6B.D</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> ... in library <b> TESD</b> </TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
Output data structure:    </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6B</b> </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
</TABLE>
<P>
A plot of the streamlines is generated by preprocessor <b> TRMCXX</b> as follows:
<P>
<TABLE COLS=2 RULES=GROUPS>
<COL ALIGN=LEFT><COL ALIGN=LEFT>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>
Call preprocessor:              </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> TRMCXX</b> </TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
</TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP></TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
Specify input data structures:  </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6MAIL</b> </TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>  
                                </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6COOR</b> </TD></TR>
<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
                                </TD><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> <b> T6B</b> </TD></TR>
</TABLE>
</OL>
<P>
<P><A NAME=3249>&#160;</A><IMG BORDER=0 ALIGN=BOTTOM ALT="" SRC="img273.gif">
<BR><STRONG>Figure 3.13:</STRONG> <i> Streamlines</i><A NAME=fig23>&#160;</A><BR>
<P>
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