CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > Siemens > STAR-CCM+

how to calculate courant number

Register Blogs Community New Posts Updated Threads Search

Like Tree1Likes
  • 1 Post By me3840

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   March 13, 2020, 11:01
Default how to calculate courant number
  #1
New Member
 
Emmanuel Sarpong
Join Date: Dec 2019
Posts: 10
Rep Power: 6
estar is on a distinguished road
i want to verify that my conditions for my simulation is correct. I am using the courant number equation deltaT/Deltax *v. What option in the mesh controls would you be able to tell the size of deltax?
Attached Images
File Type: png Capture7.PNG (15.2 KB, 34 views)
estar is offline   Reply With Quote

Old   March 19, 2020, 14:19
Default
  #2
Senior Member
 
Join Date: Nov 2010
Location: USA
Posts: 1,232
Rep Power: 24
me3840 is on a distinguished road
That number will vary over the mesh. You need to look at the region you're interested in the mesh and determine what value to use.

Alternatively the convective courant number field function will compute the CFL on every cell independently.
Steklo_Plastik likes this.
me3840 is offline   Reply With Quote

Reply

Tags
courant, delta time, mesh, time step


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
decomposePar problem: Cell 0contains face labels out of range vaina74 OpenFOAM Pre-Processing 37 July 20, 2020 05:38
parallel run OpenFoam Srinath Reddy OpenFOAM Running, Solving & CFD 13 February 27, 2019 09:15
[Other] Equal decomposition of cylindrical fluid domain Sean95 OpenFOAM Meshing & Mesh Conversion 3 February 12, 2019 03:34
[mesh manipulation] Importing Multiple Meshes thomasnwalshiii OpenFOAM Meshing & Mesh Conversion 18 December 19, 2015 18:57
decomposePar -allRegions stru OpenFOAM Pre-Processing 2 August 25, 2015 03:58


All times are GMT -4. The time now is 04:56.