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| − | {| style="width:100%; background:#fcfcfc; margin-top:+.9em; border:1px solid #ccc;"
| + | Define the ''convective'', ''total'' or ''material'' [http://en.wikipedia.org/wiki/Convective_derivative ''material'' derivative] operator as |
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| − | {| style="width:280px; border:solid 0px; background:none;"
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| − | |style="width:280px; text-align:center; white-space:nowrap; color:#000;"|
| + | <math> |
| − | <div style="font-size:162%; border:none; margin:0; padding:.1em; color:#000;">Unofficial OpenFOAM wiki</div> | + | \frac{D}{Dt} = \frac{\partial}{\partial t} + \mathbf{U} \cdot \nabla |
| − | <div id="articlecount" style="width:100%; text-align:center; font-size:85%;">{{NUMBEROFARTICLES}} pages have been created</div>
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| − | | + | This relates the rate of change of a quantity within an infinitesimal control fluid volume that we would witness if we were riding with it along a streamline (Lagrangian viewpoint), to the rate of change of the quantity that a stationary observer would witness from their vantage point on the streamline (Eulerian viewpoint). |
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| − | {|style="width:100%; border:1px solid #e3e0d0; background:#fdfae9; margin:0px 0px;"
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| − | | width=25% align=center | [http://www.opencfd.co.uk/openfoam/doc/user.html '''User Guide''']
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| − | | width=25% align=center | [http://openfoam.cfd-online.com/cgi-bin/forum/discus.cgi '''Forum''']
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| − | | width=25% align=center | [[About this wiki]]
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| − | | width=25% align=center | [http://foam.sourceforge.net/doc/Doxygen/html/ '''Doxygen''']
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| − | {|width="100%" cellpadding="2" cellspacing="5" style="vertical-align:top; background:#fcfffc;"
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| − | ! <h2 style="margin:0; background:#bff8bf; font-size:120%; font-weight:bold; border:1px solid #00bc00; text-align:left; color:#000; padding:0.2em 0.4em;">Refer</h2>
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| − | * [http://www.opencfd.co.uk/openfoam/doc/user.html User Guide]
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| − | * [http://foam.sourceforge.net/doc/Guides-a4/ProgrammersGuide.pdf Advanced Guide]
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| − | * [http://foam.sourceforge.net/doc/Doxygen/html/ Source Code]
| + | |
| − | =====Other sources=====
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| − | [http://www.foamcfd.org/resources/theses.html FoamCFD theses] |
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| − | ! <h2 style="margin:0; background:#def6de; font-size:120%; font-weight:bold; border:1px solid #00bc00; text-align:left; color:#000; padding:0.2em 0.4em;">Links</h2>
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| − | * [http://www.opencfd.co.uk/openfoam/ "OpenFOAM"] is a registered trademark of [http://www.opencfd.co.uk OpenCFD], a UK-based company.
| + | |
| − | =====Active sites=====
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| − | [http://www.foamcfd.org/ FoamCFD] (English) | [http://www.ofwikija.org/ OFWikiJa] (Japanese) | [http://www.ltt-rostock.de/mediawiki/index.php/OpenFOAM University of Rostock wiki] (German) | [http://mavimo.org/openfoam Mavimo] (Italian) | [http://www.cfditalia.org CFD Italia] (Italian) | [http://notasemcfd.blogspot.com Notes on CFD] (Portuguese)
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| − | |style="width:33%; border:1px solid #0000bc; vertical-align:top; color:#000; background:#f9f9ff;"|
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| − | {|width="100%" cellpadding="2" cellspacing="5" style="vertical-align:top; background:#f9f9ff;"
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| − | ! <h2 style="margin:0; background:#c6c6f3; font-size:120%; font-weight:bold; border:1px solid #0000bc; text-align:left; color:#000; padding:0.2em 0.4em;">Use</h2>
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| − | * [http://en.wikipedia.org/wiki/OpenFOAM About OpenFOAM] | [http://en.wikipedia.org/wiki/OpenFOAM Wikipedia article]
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| − | * [http://www.opencfd.co.uk/openfoam/download.html#download Download]
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| − | * [[Main FAQ|OpenFOAM FAQ]]
| + | |
| − | =====Other Tools=====
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| − | * '''Pre-process''' | [http://www.salome-platform.org/home/presentation/overview/ Salome]
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| − | * '''Post-process''' | [http://www.paraview.org/New/index.html Paraview]
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| − | ! <h2 style="margin:0; background:#dcdcf4; font-size:120%; font-weight:bold; border:1px solid #0000bc; text-align:left; color:#000; padding:0.2em 0.4em;">Develop</h2>
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| − | * The [http://sourceforge.net/ Sourceforge] [http://sourceforge.net/projects/openfoam-extend/ OpenFOAM-extend] project provides a [http://en.wikipedia.org/wiki/Subversion_(software) subversion] repository for collaborative development.
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| − | =====Howto...=====
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| − | * [[Snip calculating mass flow|Calculate mass flow]]
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| − | * [[Snip calculate field value at point|Calculate field value at arbitrary point]]
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| − | {|width="100%" cellpadding="2" cellspacing="5" style="vertical-align:top; background:#fff7f7;"
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| − | ! <h2 style="margin:0; background:#f4c1c1; font-size:120%; font-weight:bold; border:1px solid #bc0000; text-align:left; color:#000; padding:0.2em 0.4em;">News</h2>
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| − | OpenCFD commences testing of 1.5beta
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| − | 2008: Most of the developments for this release are in: new applications, e.g. for multiphase flow and cavitation, buoyancy-flow and heat transfer, high speed flows and even molecular dynamics; new utilities, e.g. for meshing and case monitoring; and, new modelling, e.g. in Lagrangian particle tracking, radiation and rotating frames of reference. [http://www.opencfd.co.uk/openfoam/version1.5beta.html source]
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| − | [[Main_Links#In_the_News|News archive]]
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| − | ! <h2 style="margin:0; background:#f6dede; font-size:120%; font-weight:bold; border:1px solid #bc0000; text-align:left; color:#000; padding:0.2em 0.4em;">Learn</h2>
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| − | =====Training=====
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| − | * Foundation and Advanced [http://www.opencfd.co.uk/training.html courses] provided by OpenCFD and SGI.
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| − | =====Gatherings=====
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| − | * [http://www.openfoamworkshop.org/2009/index.php5?title=Main_Page Fourth OpenFOAM Workshop] (June 2009, Montreal)
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| − | * [http://www.csc.fi/csc/kurssit/arkisto/ofud09 Finnish OpenFOAM user day] (3 Feb 2009)
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| − | =====Tutorial archives=====
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| − | * [http://www.mfix.org/mwiki/index.php/Main_Page NETL wiki]
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| − | * [http://powerlab.fsb.hr/ped/kturbo/FsbOpenFOAMWorkshop/ OpenFOAM Workshop 2006]
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| − | | align=center | '''[[Main Policy|Rules and Guidelines]]''' | [[Site News]] | [[Main TestSite|Wiki sandpits]]
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This relates the rate of change of a quantity within an infinitesimal control fluid volume that we would witness if we were riding with it along a streamline (Lagrangian viewpoint), to the rate of change of the quantity that a stationary observer would witness from their vantage point on the streamline (Eulerian viewpoint).
