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

enabling multiprocessor for sliding mesh (DyM) cases

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

Reply
 
LinkBack Thread Tools Display Modes
Old   September 15, 2016, 20:33
Default enabling multiprocessor for sliding mesh (DyM) cases
  #1
Member
 
Janry
Join Date: Oct 2015
Posts: 46
Rep Power: 3
qjh888 is on a distinguished road
Hi Foamers,

I've just wandering how can I operating my case (1 stator passage, 1 rotor passage using sliding mesh interface) with multiprocessors?

Currently I've using every method to decompospar, however, it is still cannot run with even just 2 cores!

It is running very very very slow, so who can help me out?

Thanks!
Janry
qjh888 is offline   Reply With Quote

Old   September 17, 2016, 01:02
Default
  #2
Member
 
Janry
Join Date: Oct 2015
Posts: 46
Rep Power: 3
qjh888 is on a distinguished road
Does anybody knowing that?
Thanks!
qjh888 is offline   Reply With Quote

Old   September 18, 2016, 17:12
Default
  #3
Senior Member
 
Hrvoje Jasak
Join Date: Mar 2009
Location: London, England
Posts: 1,797
Rep Power: 23
hjasak will become famous soon enough
In foam-extend this has always worked. No surprise, since I wrote the topo change in the first place.

Hrv
__________________
Hrvoje Jasak
Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk
hjasak is offline   Reply With Quote

Old   September 19, 2016, 00:00
Default
  #4
Member
 
Janry
Join Date: Oct 2015
Posts: 46
Rep Power: 3
qjh888 is on a distinguished road
Quote:
Originally Posted by hjasak View Post
In foam-extend this has always worked. No surprise, since I wrote the topo change in the first place.

Hrv

Hi Hrvoje,

Thanks for your reply!
And it is very excite for me to get a reply from one of the OpenFOAM author!

I'm currently using the Density-Based solver: transonicMRFDyMFoam, but it is not operation with even 2 processors.
The solver is from here:
https://sourceforge.net/p/openfoam-e...ster/tree/src/

I'm not sure if it is the capability of the solver itself?

Thanks!
Janry
qjh888 is offline   Reply With Quote

Old   September 24, 2016, 07:12
Default
  #5
Member
 
Janry
Join Date: Oct 2015
Posts: 46
Rep Power: 3
qjh888 is on a distinguished road
Could anybody know what's happens about the multiprocessing?

Thanks!
Janry
qjh888 is offline   Reply With Quote

Old   September 29, 2016, 02:33
Default
  #6
Member
 
Janry
Join Date: Oct 2015
Posts: 46
Rep Power: 3
qjh888 is on a distinguished road
I have detailed read the introduction for the "turboFvMesh":

Code:
    Simple mixer mesh using an ggi interfaces

    This tool is used to have multiple rotating regions around the same origin
    with different rpms. Creating the cellZones is not implemented
    in this tool.
    The steps to obtain the cellZones and faceZones are:

    1) use regionCellSets utility. With this command you can have different
       cellSets for each region.

    2) run command "setsToZones -noFlipMap".  After this command the
       cellSets are transformed to cellZones.

    4) for each rotating cellZone add an entry in rpm subDict of
       constant/dynamicMeshDict

    5) in parallel you need to create from all rotating coupled-interface
       patches faceZones (if you use a ggi interface between you have already
       created these faceZones), Then you need to specify these faceZones with
       the corresponding rpm in the additional "slider" subDict in
       constant/dynamicMeshDict

However, which faceZone should I add into the "slider" subDict?
Only the two which contacted with each other, defined by overlapGgi?
And all the patches including the walls?

I'm not so sure and till I can not make it running.

Could any body help me?

Thanks in advance.

Janry
qjh888 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
SHM problem : KVLCC2 with appendage mesh sc.park OpenFOAM Native Meshers: snappyHexMesh and Others 1 March 13, 2016 14:28
Importing Multiple Meshes thomasnwalshiii OpenFOAM Meshing & Mesh Conversion 18 December 19, 2015 19:57
sliding mesh problem in CFX Saima CFX 45 September 22, 2015 10:53
Layers:problem with curvature giulio.topazio OpenFOAM Native Meshers: snappyHexMesh and Others 10 August 22, 2012 09:03
snappyHexMesh won't work - zeros everywhere! sc298 OpenFOAM Native Meshers: snappyHexMesh and Others 2 March 27, 2011 21:11


All times are GMT -4. The time now is 11:30.