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      <title>PCONV</title>
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      <div class="title_refTopic" id="xps10_pagetitle">PCONV </div>
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      <h4 class="refClassification">Convection Property Definition </h4>
      <p class="para_refTopic">Specifies the free convection boundary condition properties of a boundary condition surface element used for heat transfer analysis. </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">10 </p>
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                     <p class="para_td">PCONV </p>
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                     <p class="para_td">PCONID </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">MID </p>
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                  <td align="center" colspan="1" rowspan="1">
                     <p class="para_td">FORM </p>
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                     <p class="para_td">EXPF </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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                     <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">PCONV </p>
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                     <p class="para_td">3 </p>
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                     <p class="para_td">2 </p>
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                     <p class="para_td">0 </p>
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                     <p class="para_td">.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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                     <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">PCONID </p>
                  </td>
                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Convection property identification number.  (Integer &gt; 0) </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">MID </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Material property identification number.  (Integer &gt; 0) </p>
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                     <p class="para_td">FORM </p>
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                     <p class="para_td">Type of formula used for free convection.  (Integer 0, 1, 10, 11, 20, or 21; Default = 0) </p>
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                     <p class="para_td">EXPF </p>
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                  <td align="left" colspan="1" rowspan="1" valign="top">
                     <p class="para_td">Free convection exponent as implemented within the context of the particular form that is chosen.  See Remark <a class="links" href="javascript:void(0)" onclick="top.openFile('QRG/18topic_28.html#ref35129');return(false);">43-3. </a> (Real &ge; 0.0; Default = 0.0) 
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      <div class="title_refCategory">Remarks: </div>
      <div class="refCategoryContent">
         <ol type="1" start="1">
            <li>
               <p class="para_item">Every surface to which free convection is to be applied must reference a PCONV entry.  PCONV is referenced on the CONV Bulk Data entry. </p>
            </li>
            <li>
               <p class="para_item">MID is used to supply the convection heat transfer coefficient (H). </p>
            </li>
            <li><a name="ref35129"></a><p class="para_item">EXPF is the free convection temperature exponent. </p>
               <ul>
                  <li>
                     <p class="para_item">If FORM = 0, 10, or 20, EXPF is an exponent of (T  &ndash;  TAMB), where the convective heat transfer is represented as </p>
                     <p align="center"><img align="bottom" src="graphics/bulkp-equ28.gif"></p>
                  </li>
                  <li>
                     <p class="para_item">If FORM = 1, 11, or 21, </p>
                     <p align="center"><img align="bottom" src="graphics/bulkp-equ29.gif"></p>
                     <p class="para_item">where T represents the elemental grid point temperatures and TAMB is the associated ambient temperature. </p>
                  </li>
               </ul>
            </li>
            <li>
               <p class="para_item">FORM specifies the formula type and the reference temperature location used in calculating the convection film coefficient if FLMND = 0. </p>
               <ul>
                  <li>
                     <p class="para_item">If FORM = 0 or 1, the reference temperature is the average of element grid point temperatures (average) and the ambient point temperatures (average). </p>
                  </li>
                  <li>
                     <p class="para_item">If FORM = 10 or 11, the reference temperature is the surface temperature (average of element grid point temperatures). </p>
                  </li>
                  <li>
                     <p class="para_item">If FORM = 20 or 21, the reference temperature is the ambient temperature (average of ambient point temperatures). </p>
                  </li>
               </ul>
            </li>
         </ol>
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