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

About the outer PIMPLE loop

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

Reply
 
LinkBack Thread Tools Display Modes
Old   July 24, 2013, 11:53
Question About the outer PIMPLE loop
  #1
Senior Member
 
Join Date: Nov 2012
Posts: 168
Rep Power: 4
hz283 is on a distinguished road
Hi All,

I am recently doing a transient simulation using rhoPimpleFoam (version 2.1.1). There is a parameter called as nOuterCorrectors controlling the outer looping numbers. I have the following questions:

1, To do an accurate transient simulation, how many loops should I used? Because when just use one loop the simulation still can run but if I increase the loop to 5 iteration step, it still give some results. As an extreme example, when I increase the step to be 50, most of the later step need zZERO iteration step.

2, Is it necessary to make the outer looping convergent? and the corresponding standard for convengence? For example, when I increased the iteration step to be 50, can we think of those iterations with zero step as convengence? If yes, why does Openfoam not stop automatically to continue to the next time step? However, in another forum, I find the following thread:

http://www.openfoam.org/mantisbt/view.php?id=371

Where the outerloop will finish in advance (less than 50 steps). This situation never happens in my openfoam simulations.

Any comments and help are welcome, thanks.
hz283 is offline   Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Problem with Gmsh nishant_hull Open Source Meshers: Gmsh, Netgen, CGNS, ... 19 July 31, 2015 05:10
SnappyHexMesh for internal Flow vishwa OpenFOAM Native Meshers: snappyHexMesh and Others 23 August 6, 2014 03:50
my stl surface is seen as just a line rcastilla OpenFOAM Meshing & Mesh Conversion 2 January 6, 2010 02:30
NACA0012 geometry/design software needed Franny Main CFD Forum 13 July 7, 2007 15:57
CFX TASCflow - while-endwhile loop ina macro Deepak Ganga CFX 0 September 6, 2003 22:21


All times are GMT -4. The time now is 07:29.