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

Divergence scheme for high reynolds number LES

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 4, 2016, 09:50
Default Divergence scheme for high reynolds number LES
  #1
New Member
 
Balajee
Join Date: Dec 2013
Posts: 13
Rep Power: 12
bala_gk1988 is on a distinguished road
Hi
Can anyone tell me which divergence scheme in openfoam to use for high reynolds number LES.

upwind cannot be used because of dissipation
linear cannot be used due to peclet number criteria ( too many number of cells to satisfy it)

I need a good validated scheme.
bala_gk1988 is offline   Reply With Quote

Old   April 4, 2016, 12:32
Default
  #2
Senior Member
 
Mahdi Hosseinali
Join Date: Apr 2009
Location: NB, Canada
Posts: 273
Rep Power: 17
anishtain4 is on a distinguished road
Quote:
div(phi,U) Gauss linear;
is an standard option in unstructured LES solvers, however it is not the best. Higher order methods are less dissipative.
Upwind method can be used if you use implicit LES (Furbey et al.)
Peclet number is not an issue since the diffusion is not being solved explicitly.
Higher order central discretizations would've had the Peclet issue if it was the case.
anishtain4 is offline   Reply With Quote

Old   April 29, 2020, 14:01
Default
  #3
New Member
 
navid toussi
Join Date: Nov 2015
Posts: 20
Rep Power: 10
navidmt is on a distinguished road
Quote:
Originally Posted by bala_gk1988 View Post
Hi
Can anyone tell me which divergence scheme in openfoam to use for high reynolds number LES.

upwind cannot be used because of dissipation
linear cannot be used due to peclet number criteria ( too many number of cells to satisfy it)

I need a good validated scheme.
Have you found any answer for your question?
navidmt is offline   Reply With Quote

Old   April 29, 2020, 14:08
Default
  #4
Senior Member
 
Santiago Lopez Castano
Join Date: Nov 2012
Posts: 354
Rep Power: 15
Santiago is on a distinguished road
Quote:
Originally Posted by navidmt View Post
Have you found any answer for your question?
Gauss reconCentral cellLimited leastSquares 1.0
Santiago is offline   Reply With Quote

Old   April 29, 2020, 14:57
Default
  #5
New Member
 
navid toussi
Join Date: Nov 2015
Posts: 20
Rep Power: 10
navidmt is on a distinguished road
Quote:
Originally Posted by Santiago View Post
Gauss reconCentral cellLimited leastSquares 1.0
I checked this scheme before. Since I’m working with OF v6 there is no such a scheme.
navidmt is offline   Reply With Quote

Reply

Tags
divergence, peclet number

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
[Other] Can't Shake Erros: patch type 'patch' not constraint type 'empty' BrendaEM OpenFOAM Meshing & Mesh Conversion 12 April 3, 2022 19:32
Obtaining Reynolds Number in FLUENT Emmanuel FLUENT 2 April 7, 2016 02:46
Compressor Simulation using rhoPimpleDyMFoam Jetfire OpenFOAM Running, Solving & CFD 107 December 9, 2014 14:38
Stable boundaries marcoymarc CFX 33 March 13, 2013 07:39
CFX Solver Reynolds Number haider760 CFX 2 March 4, 2012 23:05


All times are GMT -4. The time now is 17:27.