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

solving sequence of pressure based segregated solver

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   June 18, 2020, 06:04
Default solving sequence of pressure based segregated solver
  #1
Senior Member
 
Weiqiang Liu
Join Date: Feb 2018
Posts: 278
Rep Power: 9
Weiqiang Liu is on a distinguished road
Hi all,

I have a confusion about solving sequence of pressure based segregated solver.

I am wondering is fluent solving all conservation equations in one cell and then proceed to the next cell or solving one conservation equation in all cells and then proceed to the next conservation equation for all cells?

Best regards

Weiqiang
Weiqiang Liu is offline   Reply With Quote

Old   June 18, 2020, 06:09
Default Solver Approach
  #2
Senior Member
 
vinerm's Avatar
 
Vinerm
Join Date: Jun 2009
Location: Nederland
Posts: 2,946
Blog Entries: 1
Rep Power: 36
vinerm will become famous soon enough
Solution is always for a full matrix and the matrix is composed of field, i.e., values of a variable, say T, over whole mesh. The actual method is rather involved, but in simpler terms, each equation is solved in a sequential manner over whole mesh in each iteration. Flow equations are solved first and then turbulence, then energy and other equations. How flow equations are solved depends on the pressure-velocity coupling used.

Solving an equation in a single cell does not have a meaning; there is nothing to be solved, actually.
__________________
Regards,
Vinerm

PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.
vinerm is offline   Reply With Quote

Old   June 18, 2020, 06:14
Default
  #3
Senior Member
 
Weiqiang Liu
Join Date: Feb 2018
Posts: 278
Rep Power: 9
Weiqiang Liu is on a distinguished road
Quote:
Originally Posted by vinerm View Post
Solution is always for a full matrix and the matrix is composed of field, i.e., values of a variable, say T, over whole mesh. The actual method is rather involved, but in simpler terms, each equation is solved in a sequential manner over whole mesh in each iteration. Flow equations are solved first and then turbulence, then energy and other equations. How flow equations are solved depends on the pressure-velocity coupling used.

Solving an equation in a single cell does not have a meaning; there is nothing to be solved, actually.
Hi , Vinerm,

Yes, I understand. Fluent solves a whole matrix of one conservation equation for the whole domain and then proceed to the next conservation matrix.

Thanks a lot

Weiqiang
Weiqiang Liu is offline   Reply With Quote

Reply

Tags
pressure based, segregated solver, solving sequence


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
Free surface issues with interDyMFoam for hydroturbine oumnion OpenFOAM Running, Solving & CFD 0 October 6, 2017 15:05
Cannot run the code properly: very large time step continuity error crst15 OpenFOAM Running, Solving & CFD 9 December 14, 2014 19:17
pimpleFoam: turbulence->correct(); is not executed when using residualControl hfs OpenFOAM Running, Solving & CFD 3 October 29, 2013 09:35
pisoFoam with k-epsilon turb blows up - Some questions Heroic OpenFOAM Running, Solving & CFD 26 December 17, 2012 04:34
Upgraded from Karmic Koala 9.10 to Lucid Lynx10.04.3 bookie56 OpenFOAM Installation 8 August 13, 2011 05:03


All times are GMT -4. The time now is 16:21.