CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > OpenFOAM

ddt explicit or implicit with courant number!!

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

LinkBack Thread Tools Search this Thread Display Modes
Old   December 13, 2010, 11:13
Default ddt explicit or implicit with courant number!!
Join Date: Jul 2010
Posts: 49
Rep Power: 15
mrshb4 is on a distinguished road
Dear Foamers

I want to solve a transient turbomachinery problem using turbDyMFoam. As I've read in OpenFOAM user guide, there are four time discretization that are:

- steadyState

- Euler

- backward

- crankNicolson

and three latter are implicit. However, when I use them, a courant number also appears. As I know implicit time discretizations are unconditionally stable, then what is this courant number? Does it can be upper than 1 ?!

If no, how should I use a real implicit method?!!

Thank you
mrshb4 is offline   Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
mesh file for flow over a circular cylinder Ardalan Main CFD Forum 7 December 15, 2020 13:06
Question about explicit and implicit sunnysun OpenFOAM Running, Solving & CFD 3 December 23, 2012 19:12
Unaligned accesses on IA64 andre OpenFOAM 5 June 23, 2008 10:37
Courant number and implicit treatment pbo OpenFOAM Running, Solving & CFD 7 January 19, 2008 15:29
Cell Courant number T FLUENT 0 January 18, 2008 03:27

All times are GMT -4. The time now is 07:21.