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      <title>VIEW</title>
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      <div class="title_refTopic" id="xps10_pagetitle">VIEW </div>
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      <h4 class="refClassification">View Factor Definition </h4>
      <p class="para_refTopic">Defines radiation cavity and shadowing for radiation view factor calculations. </p>
      <div class="title_refCategory">Format: </div>
      <div class="refCategoryContent">
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                     <p class="para_th">1 </p>
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                     <p class="para_th">2 </p>
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                     <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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                     <p class="para_th">10 </p>
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                     <p class="para_td">VIEW </p>
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                     <p class="para_td">IVIEW </p>
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                     <p class="para_td">ICAVITY </p>
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                     <p class="para_td">SHADE </p>
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                     <p class="para_td">NB </p>
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                     <p class="para_td">NG </p>
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                     <p class="para_td">DISLIN </p>
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                     <p class="para_td">&nbsp; </p>
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                     <p class="para_td">&nbsp; </p>
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                     <p class="para_td">&nbsp; </p>
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      <div class="title_refCategory">Example: </div>
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                     <p class="para_td">VIEW </p>
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                     <p class="para_td">1 </p>
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                     <p class="para_td">1 </p>
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                     <p class="para_td">BOTH </p>
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                     <p class="para_td">2 </p>
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                     <p class="para_td">3 </p>
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                     <p class="para_td">0.25 </p>
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                     <p class="para_td">&nbsp; </p>
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                     <p class="para_td">&nbsp; </p>
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                     <p class="para_td">&nbsp; </p>
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      <div class="title_refCategory">Fields:</div>
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                     <p class="para_th"><b class="uiTerm">Field </b></p>
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                     <p class="para_th"><b class="uiTerm">Contents </b></p>
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                     <p class="para_td">IVIEW </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Identification number.  (Integer &gt; 0) </p>
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                     <p class="para_td">ICAVITY </p>
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                     <p class="para_td">Cavity identification number for grouping the radiant exchange faces of CHBDYi elements.  (Integer &gt; 0) </p>
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                     <p class="para_td">SHADE </p>
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                     <p class="para_td">Shadowing flag for the face of CHBDYi element.  (Character, Default=&ldquo;BOTH&rdquo;) </p>
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                     <p class="para_td">&nbsp; </p>
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                     <p class="para_td">NONE means the face can neither shade nor be shaded by other faces. </p>
                     <p class="para_td">KSHD means the face can shade other faces. </p>
                     <p class="para_td">KBSHD means the face can be shaded by other faces. </p>
                     <p class="para_td">BOTH means the face can both shade and be shaded by other faces.  (Default) </p>
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                     <p class="para_td">NB </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Subelement mesh size in the beta direction.  (Integer &gt; 0; Default=1) </p>
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                     <p class="para_td">NG </p>
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                     <p class="para_td">Subelement mesh size in the gamma direction.  (Integer &gt; 0; Default=1) </p>
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                     <p class="para_td">DISLIN </p>
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                     <p class="para_td">The displacement of a surface perpendicular to the surface.  See <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/20topic_34.html#ref51221');return(false);">Figure 19-</a>.  (Real; Default=0.0) 
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      <div class="title_refCategory">Remarks: </div>
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            <li>
               <p class="para_item">VIEW must be referenced by CHBDYE, CHBDYG, or CHBDYP elements to be used. </p>
            </li>
            <li>
               <p class="para_item">ICAVITY references the cavity to which the face of the CHBDYi element belongs;  a zero or blank value indicates this face does not participate in a cavity. </p>
            </li>
            <li>
               <p class="para_item">NB, NG, and DISLIN are used in the calculation of view factors by finite difference or contour integration techniques.  They are not used with the VIEW3D entry. </p>
            </li>
            <li>
               <p class="para_item">A summary of the shadowing conditions can be requested by the PARAM,MESH,YES Bulk Data entry. </p>
            </li>
            <li>
               <p class="para_item">SHADE references shadowing for CHBDYi elements participating in a radiation cavity, the VIEW calculation can involve shadowing. </p>
            </li>
            <li>
               <p class="para_item">DISLIN should only be used with LINE type CHBDYE and CHBDYP surface elements.  DISLIN &gt; 0.0 means into the cavity.  See <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/20topic_34.html#ref51221');return(false);">Figure 19-</a>. 
               </p><a name="ref51221"></a><div class="figure">
                  <p align="center"><img align="bottom" src="graphics/bulktuv-fig10.gif"></p>
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               <div class="title_figure">Figure. DISLIN Convention </div>
            </li>
            <li>
               <p class="para_item">NB and NG define the subelement mesh refinement when using the VIEW module (as opposed to the VIEW3D module) for the calculation of view factors. </p><a name="ref67318"></a><div class="figure">
                  <p align="center"><img align="bottom" src="graphics/bulktuv-fig11.gif"></p>
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               <div class="title_figure">Figure. Typical AREA4 surface element where NB=2 and NG=4 </div>
            </li>
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