<!DOCTYPE html
  PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<!--
Copyright (c) 2006 UGS Corp.

All Rights Reserved.

This software and related documentation are proprietary to UGS Corp.
-->
<html>
   <head>
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      <title>RADM</title>
      <script language="javaScript">
        abridged="false";
        displayConditions=new Array();
      </script>
      <link type="text/css" href="../css/main_styles.css" rel="stylesheet">
   </head>
   <body class="bodydocs" onload="top.pageLoader()" bgcolor="#FFFFFF">
      <hr noshade="true">
      <div class="title_refTopic" id="xps10_pagetitle">RADM </div>
      <hr noshade="true">
      <h4 class="refClassification">Radiation Boundary Material Property </h4>
      <p class="para_refTopic">Defines the radiation properties of a boundary element for heat transfer analysis. </p>
      <div class="title_refCategory">Format: </div>
      <div class="refCategoryContent">
         <table border="1" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
            </colgroup>
            <thead>
               <tr>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">1 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">2 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">3 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">4 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">5 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">6 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">7 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">8 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">9 </p>
                  </th>
                  <th align="center" colspan="1" rowspan="1">
                     <p class="para_th">10 </p>
                  </th>
               </tr>
            </thead>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">RADM </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">RADMID </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">ABSORP </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">EMIS1 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">EMIS2 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">EMIS3 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">EMIS4 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">EMIS5 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">EMIS6 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">&nbsp; </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">EMIS7 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">-etc.- </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>
                  </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>
                  </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>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
            </tbody>
         </table><br></div>
      <div class="title_refCategory">Example: </div>
      <div class="refCategoryContent">
         <table border="1" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
               <col span="1" width="10*">
            </colgroup>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">RADM </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">11 </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">.45 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">.33 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">.29 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">.20 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">.17 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">.13 </p>
                  </td>
                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">&nbsp; </p>
                  </td>
               </tr>
            </tbody>
         </table><br></div>
      <div class="title_refCategory">Fields:</div>
      <div class="refCategoryContent">
         <table cellpadding="9" width="100%" align="center">
            <colgroup span="1">
               <col span="1" width="16*">
               <col span="1" width="84*">
            </colgroup>
            <thead>
               <tr>
                  <th align="left" colspan="1" rowspan="1">
                     <p class="para_th"><b class="uiTerm">Field </b></p>
                  </th>
                  <th align="left" colspan="1" rowspan="1">
                     <p class="para_th"><b class="uiTerm">Contents </b></p>
                  </th>
               </tr>
            </thead>
            <tbody>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">RADMID </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Material identification number.  (Integer &gt; 0) </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">ABSORP </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Surface absorptivity or the temperature function curve multiplier if ABSORP is variable.  See Remark <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/19topic_14.html#ref18135');return(false);">20-2. </a> (0.0 &le; Real &le; 1.0) 
                     </p>
                  </td>
               </tr>
               <tr>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">EMISi </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Surface emissivity at wavelength LAMBDAi or the temperature function curve multiplier if EMISi is variable  (See the RADBND entry.)  (0.0 &le; Real &le; 1.0) </p>
                  </td>
               </tr>
            </tbody>
         </table><br></div>
      <div class="title_refCategory">Remarks: </div>
      <div class="refCategoryContent">
         <ol type="1" start="1">
            <li>
               <p class="para_item">The RADM entry is directly referenced only by one of the CHBDYE, CHBDYG, or CHBDYP type surface element entries. </p>
            </li>
            <li><a name="ref18135"></a><p class="para_item">For radiation enclosure problems, ABSORP is set equal to emissivity.  For QVECT loads, absorptivity is specified by ABSORP. </p>
            </li>
            <li>
               <p class="para_item">If there is more than one EMISi, then: </p>
               <ul>
                  <li>
                     <p class="para_item">There must be a RADBND entry. </p>
                  </li>
                  <li>
                     <p class="para_item">The number of EMISi may not exceed the number of LAMBDAi on the RADBND entry. </p>
                  </li>
                  <li>
                     <p class="para_item">The emissivity values are given for a wavelength specified by the corresponding LAMBDAi on the RADBND entry.  Within each discrete wavelength band, the emissivity is assumed to be constant. </p>
                  </li>
                  <li>
                     <p class="para_item">At any specific wavelength and surface temperature, the absorptivity is exactly equal to the emissivity. </p>
                  </li>
               </ul>
            </li>
            <li>
               <p class="para_item">To perform any radiation heat transfer exchange, the user must furnish PARAM entries for: </p>
               <ul>
                  <li>
                     <p class="para_item">TABS to define the absolute temperature scale. </p>
                  </li>
                  <li>
                     <p class="para_item">SIGMA &sigma; to define the Stefan-Boltzmann constant in appropriate units. </p>
                  </li>
               </ul>
            </li>
         </ol>
      </div>
   </body>
</html>