Difference between revisions of "User:Hoogs/Sandpit"

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Define the ''convective'', ''total'' or ''material'' [http://en.wikipedia.org/wiki/Convective_derivative ''material'' derivative] operator as
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\frac{D}{Dt} = \frac{\partial}{\partial t} + \mathbf{U} \cdot \nabla
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* Latest OpenFOAM version: 1.5 (14 Jul 2008) | [http://www.opencfd.co.uk/openfoam/doc/UpgradeTo1.5.html#UpgradeTo1.5 Upgrade]
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* Release notes: [http://www.opencfd.co.uk/openfoam/doc/ReleaseNotes-1.5.html 1.5] | [http://www.opencfd.co.uk/openfoam/version1.4.1.html 1.4.1] | [http://www.opencfd.co.uk/openfoam/version1.4.html 1.4] | [http://www.opencfd.co.uk/openfoam/version1.3.html 1.3] | [http://www.opencfd.co.uk/openfoam/version1.2.html 1.2]
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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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| 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 | [http://www.opencfd.co.uk/openfoam/features.html '''Feature list''']
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| width=25% align=center | [http://foam.sourceforge.net/doc/Doxygen/html/ '''Doxygen''']
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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] | [[Main UserGuideAddendum|Additional notes]]
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* [http://foam.sourceforge.net/doc/Guides-a4/ProgrammersGuide.pdf Advanced Guide] | [[Main ProgrammerGuideAddendum|Additional notes]]
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* [http://foam.sourceforge.net/doc/Doxygen/html/ Source Code]
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=====Other sources=====
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[[Main ContribPapers|Papers]] | [http://www.foamcfd.org/resources/theses.html FoamCFD theses]
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=====Notes on...=====
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[[Main OFSolvers|Solvers]] | [[Main OFUtilities|Utilities]] | [[Main OFTutorials|Tutorials]]
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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;">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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=====Tutorials=====
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* Wiki | [[MRFSimpleFoam|Moving frame example]] | [[Main Tutorials|more]]
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* Other | [http://www.mfix.org/mwiki/index.php/Main_Page NETL wiki] | [http://powerlab.fsb.hr/ped/kturbo/FsbOpenFOAMWorkshop/ OpenFOAM Workshop 2006]
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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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* Wikipedia [http://en.wikipedia.org/wiki/OpenFOAM article] | [[Main FAQ#What_is_OpenFOAM.3F|more]]
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* [http://www.opencfd.co.uk/openfoam/download.html#download Download] | [http://dpdx.net/openfoam-cygwin/ OF1.3 Windows port]
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* [[Basic_Installation_Steps|Install]]
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* [[Main FAQ|FAQ]] | [[Main KnownBugs|Known bugs]]
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=====Tips and Tricks=====
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* [[Tip Advanced Time Selection Options|Advanced time selection in OF1.5]]
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* [[Main TipsAndTricks|more]]
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=====Other Tools=====
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* Pre | [http://en.wikipedia.org/wiki/SALOME Salome] | [http://www.hpfem.jku.at/netgen/ Netgen]
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* Post | [http://en.wikipedia.org/wiki/Paraview Paraview] | [http://en.wikipedia.org/wiki/Opendx OpenDX]
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* [[Main OtherSoftware|more]]
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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 Sourceforge [http://sourceforge.net/projects/openfoam-extend/ OpenFOAM-extend] project provides a subversion repository for collaborative development.
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* Coding [[Main CodingConventions|style and conventions]]
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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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* [[How to add temperature to icoFoam|Add temperature field to icoFoam]]
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* [[Main HowTos|more]]
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=====Forge=====
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* [[Main ContribSolvers|Solvers]]
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* [[Main ContribUtilities|Utilities]]
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* [[Main ContribOther|BCs, physics models, other]]
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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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* The old OpenFOAM forum has been migrated to a [http://www.cfd-online.com/Forums/openfoam/ new interface and location].  You need to [http://www.cfd-online.com/Forums/login.php?do=lostpw request a password reset] for continued use.
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* OpenFOAM [http://www.opencfd.co.uk/opencfd-sgi-australia.html courses in Australia] 14-17 April 2009.
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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;">Links</h2>
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* "OpenFOAM" is a registered trademark of [http://www.opencfd.co.uk OpenCFD], a UK-based company.
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=====Wiki links=====
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[[Main Users|User pages]] | [[Main Local User Groups|Local user groups]] | [[Main Special Interest Groups|Special Interest Groups]] | [[Main Links|more]]
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=====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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Latest revision as of 01:00, 21 September 2009

Define the convective, total or material material derivative operator as


\frac{D}{Dt} = \frac{\partial}{\partial t} + \mathbf{U} \cdot \nabla

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).