# Implementation of the Courant Number and time stepping in BubbleFoam

 User Name Remember Me Password
 Register Blogs Members List Search Today's Posts Mark Forums Read

 LinkBack Thread Tools Search this Thread Display Modes
 June 11, 2012, 07:13 Implementation of the Courant Number and time stepping in BubbleFoam #1 New Member   Anne Severt Join Date: May 2012 Posts: 4 Rep Power: 14 Dear all, I´m new to OpenFoam and currently working on understanding the procedure of BubbleFoam. Therefore, I tried to make the calculation of CoNum and Max Ur Courant number as well as SetDeltaT plausible. In CoNum I don´t understand WHY phi is used to get the velocity: u=phi/area. Same in Max Ur Courant number: WHY using |phir|/|Sf| to get |Ur|? And what does the reciprocal of center to center distance projected over the face normal (with a stabilization factor) of cells' shared face "nonOrthDeltaCoeffs" calculate mathematically (why factor 0.05, unit area)? Regarding the time stepping: Where does the factor "deltaTfact" come from? Why does it have such a form (min(min(...)))? Why factor 1.2? Why maxCo/CoNum? Can anybody please help me understand this? Thanks.

 Thread Tools Search this Thread Search this Thread: Advanced Search 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 Off Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post CKH OpenFOAM Running, Solving & CFD 14 February 20, 2019 09:08 msrinath80 OpenFOAM Running, Solving & CFD 18 March 3, 2015 05:36 xiuying OpenFOAM Running, Solving & CFD 8 August 27, 2013 15:33 bookie56 OpenFOAM Installation 8 August 13, 2011 04:03 msrinath80 OpenFOAM Running, Solving & CFD 9 July 22, 2007 02:58

All times are GMT -4. The time now is 21:59.

 Contact Us - CFD Online - Privacy Statement - Top