CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM

Increasing viscosity increases courant number for some reason.

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   December 1, 2022, 19:29
Default Increasing viscosity increases courant number for some reason.
  #1
New Member
 
david simm
Join Date: Oct 2022
Posts: 2
Rep Power: 0
doctor99268 is on a distinguished road
The folder is attached, when the viscosity is 0.001 the simulation runs perffectly fine, but if you change it to 0.01, courant number shoots up for some reason. even though it becomes more laminar (from 1000 re at 0.001 viscosity to 100 re at 0.01 viscosity). You can see that its in pimplefoam, but i did have this on icofoam before aswell, with the same issue.
Attached Files
File Type: zip circlemeshtest.zip (11.0 KB, 2 views)
doctor99268 is offline   Reply With Quote

Reply

Tags
courant number increasing, decreasing, viscosity, viscosity decreasing

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
[snappyHexMesh] snappyHexMesh stuck when snap is turned on yukuns OpenFOAM Meshing & Mesh Conversion 3 February 2, 2021 13:05
[mesh manipulation] Importing Multiple Meshes thomasnwalshiii OpenFOAM Meshing & Mesh Conversion 18 December 19, 2015 18:57
[OpenFOAM.org] OF2.3.1 + OS13.2 - Trying to use the dummy Pstream library aylalisa OpenFOAM Installation 23 June 15, 2015 14:49
foam-extend_3.1 decompose and pyfoam warning shipman OpenFOAM 3 July 24, 2014 08:14
air bubble is disappear increasing time using vof xujjun CFX 9 June 9, 2009 07:59


All times are GMT -4. The time now is 20:49.