# Laplacian Schemes

 Register Blogs Members List Search Today's Posts Mark Forums Read

 May 18, 2013, 15:20 Laplacian Schemes #1 Member   Eric Robertson Join Date: Jul 2012 Posts: 95 Rep Power: 8 Sponsored Links Can someone tell me what term this line refers to in the fvSchemes dictionary? Code: `laplacian((1|A(U)),p)` In other words, what is A(U) and what does this entire term look like/mean on paper? I understand the vertical bar | is a bitwise operator. immortality likes this.

 May 18, 2013, 18:02 #2 Member   Eric Robertson Join Date: Jul 2012 Posts: 95 Rep Power: 8 I suppose I may have *sort of* solved my own question. Can anyone confirm that this has to do with pressure-velocity coupling- where one would solve Poisson equations for the pressure correction? I consider myself a beginner when it comes to the depths of what's inside the code.

 May 19, 2013, 12:03 #3 Senior Member   Niels Gjoel Jacobsen Join Date: Mar 2009 Location: Deltares, Delft, The Netherlands Posts: 1,749 Rep Power: 29 Hallo, Yes, it is the Laplacian used for the solution to the pressure Poisson equation. The Code: `(1|A(U))` term is the diffusivity of pressure, and it is the inverse of the diagonal elements in the discretised momentum equation, i.e. the diagonal of the left hand side of the matrix system. Kind regards Niels msuaeronautics likes this.

 May 19, 2013, 21:59 #4 Member   Eric Robertson Join Date: Jul 2012 Posts: 95 Rep Power: 8 Understood. Thank you.

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post marine OpenFOAM 66 October 26, 2014 12:10 Chanti OpenFOAM Pre-Processing 1 April 8, 2013 06:44 oscar_urri OpenFOAM 1 December 5, 2012 18:26 shyamdsundar Main CFD Forum 0 January 15, 2010 00:15 Anthony Main CFD Forum 3 June 13, 1999 02:36