76 lines
4.8 KiB
HTML
76 lines
4.8 KiB
HTML
<html><head><title>FEM ConstraintHeatflux/ru</title><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><link type='text/css' href='wiki.css' rel='stylesheet'></head><body><h1>FEM ConstraintHeatflux/ru</h1></div>
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<h3><span class="mw-headline" id="FEM_ConstraintHeatflux"><a href="https://www.freecadweb.org/wiki/index.php?title=File:FEM_ConstraintHeatflux.png" class="image"><img alt="FEM ConstraintHeatflux.png" src="32px-FEM_ConstraintHeatflux.png" width="32" height="32" srcset="/wiki/images/thumb/f/f0/FEM_ConstraintHeatflux.png/48px-FEM_ConstraintHeatflux.png 1.5x, /wiki/images/f/f0/FEM_ConstraintHeatflux.png 2x" /></a> FEM ConstraintHeatflux</span></h3>
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<th class="ctOdd">Расположение в меню
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<td class="ctEven">FEM → Constraint heatflux
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<th class="ctOdd">Верстаки
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<td class="ctEven"><a href="https://www.freecadweb.org/wiki/index.php?title=Fem_Workbench/ru" class="mw-redirect" title="Fem Workbench/ru">FEM</a>
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<th class="ctOdd">Быстрые клавиши
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<th class="ctOdd">См. также
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<td class="ctEven"><a href="https://www.freecadweb.org/wiki/index.php?title=FEM_tutorial/ru" title="FEM tutorial/ru">FEM tutorial</a>
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<td class="ctToc"><br /><div id="toc" class="toc"><div class="toctitle"><h2>Contents</h2></div>
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<ul>
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<li class="toclevel-1"><a href="#FEM_ConstraintHeatflux"><span class="tocnumber">1</span> <span class="toctext">FEM ConstraintHeatflux</span></a></li>
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<li class="toclevel-1 tocsection-1"><a href="#Description"><span class="tocnumber">2</span> <span class="toctext">Description</span></a></li>
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<li class="toclevel-1 tocsection-2"><a href="#Use"><span class="tocnumber">3</span> <span class="toctext">Use</span></a></li>
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<li class="toclevel-1 tocsection-3"><a href="#Limitations"><span class="tocnumber">4</span> <span class="toctext">Limitations</span></a></li>
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<li class="toclevel-1 tocsection-4"><a href="#Notes"><span class="tocnumber">5</span> <span class="toctext">Notes</span></a></li>
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<h2><span class="mw-headline" id="Description">Description</span></h2>
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<p>This constraint specifies film heat transfer of a surface at temperature <i>T</i> and with a film coefficient <i>h</i> to the environment or sink at temperature <i>T<sub>0</sub> </i>. The convective heat flux <i>q</i> will satisfy: <i><b>q = h(T -T<sub>0</sub>)</b></i>
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</p>
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<h2><span class="mw-headline" id="Use">Use</span></h2>
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<ol><li>Click on <a href="https://www.freecadweb.org/wiki/index.php?title=File:FEM_ConstraintHeatflux.png" class="image"><img alt="FEM ConstraintHeatflux.png" src="32px-FEM_ConstraintHeatflux.png" width="32" height="32" srcset="/wiki/images/thumb/f/f0/FEM_ConstraintHeatflux.png/48px-FEM_ConstraintHeatflux.png 1.5x, /wiki/images/f/f0/FEM_ConstraintHeatflux.png 2x" /></a> or choose <span style="background: #DDDDDD; border: 1px solid #888888; padding: 0px 5px 1px 5px;">Model</span> → <b>Thermal Constraints</b> → <span style="background: #DDDDDD; border: 1px solid #888888; padding: 0px 5px 1px 5px;"><a href="https://www.freecadweb.org/wiki/index.php?title=File:FEM_ConstraintHeatflux.png" class="image"><img alt="FEM ConstraintHeatflux.png" src="32px-FEM_ConstraintHeatflux.png" width="32" height="32" srcset="/wiki/images/thumb/f/f0/FEM_ConstraintHeatflux.png/48px-FEM_ConstraintHeatflux.png 1.5x, /wiki/images/f/f0/FEM_ConstraintHeatflux.png 2x" /></a> Constraint heatflux</span> from the top menu.</li>
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<li>Select in the 3D-view the surface(s) the constraint should be applied to.</li>
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<li>Enter the desired surface temperature, film coefficient and environment temperature.</li></ol>
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<h2><span class="mw-headline" id="Limitations">Limitations</span></h2>
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<h2><span class="mw-headline" id="Notes">Notes</span></h2>
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<ol><li>The constraint uses the *FILM card in CalculiX. The heatflux constraint is explained at <a rel="nofollow" class="external free" href="http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node203.html">http://web.mit.edu/calculix_v2.7/CalculiX/ccx_2.7/doc/ccx/node203.html</a></li></ol>
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Online version: "<a dir="ltr" href="https://www.freecadweb.org/wiki/index.php?title=FEM_ConstraintHeatflux/ru&oldid=257541">http://www.freecadweb.org/wiki/index.php?title=FEM_ConstraintHeatflux/ru&oldid=257541</a>"</div>
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