|
|
(8 intermediate revisions by the same user not shown) |
Line 1: |
Line 1: |
− | {| 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 |
− | |style="width:56%; color:#000"|
| + | |
| | | |
− | {| style="width:280px; border:solid 0px; background:none;"
| + | <center> |
− | |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>
| + | </math> |
− | |}
| + | </center> |
− | |}
| + | |
| | | |
− | | + | 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). |
− | <!-- Start of header -->
| + | |
− | {|style="width:100%; border:1px solid #e3e0d0; background:#fdfae9; margin:0px 0px;"
| + | |
− | |cellpadding="2" cellspacing="5" style="vertical-align:center;"|
| + | |
− | |-
| + | |
− | | width=25% align=center | [http://www.opencfd.co.uk/openfoam/doc/user.html '''User Guide''']
| + | |
− | | width=25% align=center | [http://openfoam.cfd-online.com/cgi-bin/forum/discus.cgi '''Forum''']
| + | |
− | | width=25% align=center | [[About this wiki]]
| + | |
− | | width=25% align=center | [http://foam.sourceforge.net/doc/Doxygen/html/ '''Doxygen''']
| + | |
− | |-
| + | |
− | |}
| + | |
− | <!-- End of header -->
| + | |
− | | + | |
− | <!-- Start of tri-table section -->
| + | |
− | {|style="width:100%; height:400pt; border-spacing:8px; margin:0px 0px;"
| + | |
− | <!-- Start of 1st tri-table -->
| + | |
− | |style="width:33%; border:1px solid #00bc00; vertical-align:top; background:#fcfffc;"|
| + | |
− | {|width="100%" cellpadding="2" cellspacing="5" style="vertical-align:top; background:#fcfffc;"
| + | |
− | ! <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;">Documentation</h2>
| + | |
− | |-
| + | |
− | ||
| + | |
− | * [http://www.opencfd.co.uk/openfoam/doc/user.html User Guide]
| + | |
− | * [http://foam.sourceforge.net/doc/Guides-a4/ProgrammersGuide.pdf Advanced Guide]
| + | |
− | * [http://foam.sourceforge.net/doc/Doxygen/html/ Source Code]
| + | |
− | |-
| + | |
− | ! <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;">Other software</h2>
| + | |
− | |-
| + | |
− | ||
| + | |
− | * Pre | [http://www.salome-platform.org/home/presentation/overview/ Salome] | Item | etc
| + | |
− | * Post | [http://www.paraview.org/New/index.html Paraview] | Item | etc
| + | |
− | |-
| + | |
− | |}
| + | |
− | <!-- End of 1st tri-table -->
| + | |
− | <!-- Start of 2nd tri-table -->
| + | |
− | |style="width:33%; border:1px solid #0000bc; vertical-align:top; color:#000; background:#f9f9ff;"|
| + | |
− | {|width="100%" cellpadding="2" cellspacing="5" style="vertical-align:top; background:#f9f9ff;"
| + | |
− | ! <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;">Usage</h2>
| + | |
− | |-
| + | |
− | ||
| + | |
− | * [http://en.wikipedia.org/wiki/OpenFOAM About OpenFOAM]
| + | |
− | * [http://www.opencfd.co.uk/openfoam/download.html#download Download]
| + | |
− | * [[Main FAQ|OpenFOAM FAQ]]
| + | |
− | Item3 | Item4 | Item5
| + | |
− | |-
| + | |
− | ! <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;">Tips and Tricks</h2>
| + | |
− | |-
| + | |
− | ||
| + | |
− | * Install
| + | |
− | * Item2
| + | |
− | Item3 | Item4 | Item5
| + | |
− | |-
| + | |
− | |}
| + | |
− | <!-- End of 2nd tri-table -->
| + | |
− | <!-- Start of 3rd tri-table -->
| + | |
− | |style="width:33%; border:1px solid #bc0000; vertical-align:top; color:#000; background:#fff7f7;"|
| + | |
− | {|width="100%" cellpadding="2" cellspacing="5" style="vertical-align:top; background:#fff7f7;"
| + | |
− | ! <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;">Development</h2>
| + | |
− | |-
| + | |
− | ||
| + | |
− | * Item1
| + | |
− | * Item2
| + | |
− | Item3 | Item4 | Item5
| + | |
− | |-
| + | |
− | ! <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;">News</h2>
| + | |
− | |-
| + | |
− | ||
| + | |
− | OpenCFD commences testing of 1.5beta
| + | |
− | | + | |
− | 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]
| + | |
− | [[News archive]]
| + | |
− | |-
| + | |
− | |}
| + | |
− | <!-- End of 3rd tri-table -->
| + | |
− | |}
| + | |
− | <!-- End of tri-table section -->
| + | |
− | | + | |
− | <!-- Start of footer -->
| + | |
− | {|style="width:100%; border:1px solid #e3e0d0; background:#fdfae9; margin:0px 0px;"
| + | |
− | |cellpadding="2" cellspacing="5" style="vertical-align:center;"|
| + | |
− | |-
| + | |
− | | align=center | '''[[Main Policy|Rules and Guidelines]]''' | [[Site News]] | [[Main TestSite|Wiki sandpits]]
| + | |
− | |-
| + | |
− | |}
| + | |
− | <!-- End of footer -->
| + | |
− | | + | |
− | <!-- Global switches -->
| + | |
− | __NOTOC__
| + | |
− | __NOEDITSECTION__
| + | |
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).