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      <title>DESVAR</title>
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      <div class="title_refTopic" id="xps10_pagetitle">DESVAR </div>
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      <h4 class="refClassification">Design Variable </h4>
      <p class="para_refTopic">Defines a design variable for design optimization. </p>
      <div class="title_refCategory">Format: </div>
      <div class="refCategoryContent">
         <table border="1" width="100%" align="center">
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               <col span="1" width="11.74*">
               <col span="1" width="9.94*">
               <col span="1" width="11.54*">
               <col span="1" width="9.94*">
               <col span="1" width="8.14*">
               <col span="1" width="9.94*">
               <col span="1" width="10.94*">
               <col span="1" width="10.94*">
               <col span="1" width="8.54*">
               <col span="1" width="8.34*">
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                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">1 </p>
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                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">2 </p>
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                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">3 </p>
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                     <p class="para_th">4 </p>
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                     <p class="para_th">5 </p>
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                     <p class="para_th">6 </p>
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                     <p class="para_th">7 </p>
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                     <p class="para_th">8 </p>
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                     <p class="para_th">9 </p>
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                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">10 </p>
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                     <p class="para_td">DESVAR </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">ID </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">LABEL </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">XINIT </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">XLB </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">XUB </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">DELXV </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">DDVAL </p>
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                  <td align="center" bgcolor="gray" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
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                  <td align="center" bgcolor="gray" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
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      <div class="title_refCategory">Example: </div>
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               <col span="1" width="8.24*">
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               <col span="1" width="10.06*">
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               <col span="1" width="10.06*">
               <col span="1" width="10.06*">
               <col span="1" width="8.65*">
               <col span="1" width="8.24*">
               <col span="1" width="10.06*">
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                     <p class="para_td">DESVAR </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">2 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">BARA1 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">35.0 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">10. </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">100. </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">0.2 </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
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      <div class="title_refCategory">Fields:</div>
      <div class="refCategoryContent">
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                     <p class="para_th"><b class="uiTerm">Field </b></p>
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                  <th align="left" colspan="1" rowspan="1">
                     <p class="para_th"><b class="uiTerm">Contents </b></p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">ID </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Unique design variable identification number.  (Integer&gt;0) </p>
                  </td>
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               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">LABEL </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">User-supplied name for printing purposes.  (Character) </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">XINIT </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Initial value.  (Real, XLB &le; XINIT &le; XUB) </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">XLB </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Lower bound.  (Real, Default = -1.0E+20) </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">XUB </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Upper bound.  (Real, Default = +1.0E+20) </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">DELXV </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Fractional change allowed for the design variable during approximate optimization.  (Real&gt;0.0; for Default see Remark <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/15topic_10.html#ref78061');return(false);">10-2. </a>) 
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                     <p class="para_td">DDVAL </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">ID of a DDVAL entry that provides a set of allowable discrete values. (Blank or Integer&gt;0; Default=blank for continuous design variables. See Remark <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/15topic_10.html#ref57098');return(false);">10-3. </a>) 
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      <div class="title_refCategory">Remarks: </div>
      <div class="refCategoryContent">
         <ol type="1" start="1">
            <li>
               <p class="para_item">DELXV can be used to control the change in the design variable during one optimization cycle. </p>
            </li>
            <li><a name="ref78061"></a><p class="para_item">If DELXV is blank, the default is taken from the specification of the DELX parameter on the DOPTPRM entry.  If DELX is not specified, then the default is 1.0. </p>
            </li>
            <li><a name="ref57098"></a><p class="para_item">If the design variable is to be discrete (Integer&gt;0 in DDVAL field), and if either of the XLB and/or XUB bounds are wider than those given by the discrete list of values on the corresponding DDVAL entry, XLB and/or XUB will be replaced by the minimum and maximum discrete values. </p>
            </li>
         </ol>
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