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

GGI initial value definition: any effect?

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 27, 2011, 23:09
Default GGI initial value definition: any effect?
  #1
Senior Member
 
Robert
Join Date: Sep 2010
Posts: 154
Rep Power: 6
lordvon is on a distinguished road
Just a quick question...

I realized I accidentally defined values for patches of type ggi (i.e., uniform(6.8 0 0),etc.); this should be ignored by the solver, right?
lordvon is offline   Reply With Quote

Old   January 27, 2011, 23:51
Default
  #2
Member
 
Kurne
Join Date: Aug 2010
Location: Pune, INDIA
Posts: 88
Rep Power: 6
kurne is on a distinguished road
Dear
Will you please tell me How GGI is done in the Open FOAM? I am using Open FOAM 1.7.1 whether it is possible in this version.If not then which version should i use and from where should i get the extension files.If you have then please post it or tell me the procedure for that too.I am really in need of that.
Thanks In Advance.
__________________
Simulation Is Determination Of Imagination Towards Approximation


Best Regards

Mubeen K Kurne
kurne is offline   Reply With Quote

Old   January 27, 2011, 23:58
Default
  #3
Senior Member
 
Robert
Join Date: Sep 2010
Posts: 154
Rep Power: 6
lordvon is on a distinguished road
Sure. I am pretty sure OF 1.7 does not have GGI capability. What you want is OF 1.5-dev or 1.6-ext. The installation was very easy for me following these instructions: http://openfoamwiki.net/index.php/In...ucid_10.04_LTS in section 2.3.2. I got a new computer and was able to install in no time. I have Ubuntu 10.04, I believe they dont work on Ubuntu 10.10, which is the latest version. I am not too sure of the differences between 1.5dev and 1.6ext, I have 1.5dev, but they both can do GGI. Hope this helps. Oh, and for setting up the case you can start from the 'mixerGgi' tutorial files.
lordvon is offline   Reply With Quote

Old   January 28, 2011, 00:17
Default
  #4
Member
 
Kurne
Join Date: Aug 2010
Location: Pune, INDIA
Posts: 88
Rep Power: 6
kurne is on a distinguished road
Dear Lordvon
Thank you very much for giving me valuable information.This things i am searching from last couple of days i will try to install it.Hope it will work.

__________________
Simulation Is Determination Of Imagination Towards Approximation


Best Regards

Mubeen K Kurne
kurne is offline   Reply With Quote

Old   February 24, 2011, 03:46
Default
  #5
Member
 
Kurne
Join Date: Aug 2010
Location: Pune, INDIA
Posts: 88
Rep Power: 6
kurne is on a distinguished road
Dear Lordvon
Will you please tell me that to install and run OpenFOAM 1.5-dev first we need to install OpenFOAM 1.5 and then OpenFOAM 1.5-dev.If this is correct then i am unable to get source pack of OpenFOAM 1.5. Will you please tell me how to install first OpenFOAM 1.5 and then to OpenFOAM 1.5-dev.
Thanks in advance
__________________
Simulation Is Determination Of Imagination Towards Approximation


Best Regards

Mubeen K Kurne
kurne is offline   Reply With Quote

Old   February 24, 2011, 07:00
Default
  #6
Senior Member
 
Robert
Join Date: Sep 2010
Posts: 154
Rep Power: 6
lordvon is on a distinguished road
Hello Kurne, there is no need to install 1.5 first.

Are you using Ubuntu 10.04? The very easy procedure I described above works without flaw for me, and I have done it several times on different computers. Otherwise, I am sad to say I cannot help. I am not much of a computer expert or anything, and began using openfoam not too long ago.
lordvon is offline   Reply With Quote

Old   February 24, 2011, 08:27
Default
  #7
Member
 
Kurne
Join Date: Aug 2010
Location: Pune, INDIA
Posts: 88
Rep Power: 6
kurne is on a distinguished road
Dear Lordvon
I have installed OpenFOAM 1.6 on my ubuntu 10.04 Lucid and after that I followed the instruction given by the link
http://openfoamwiki.net/index.php/Installation and installed OpenFOAM 1.5-dev too. But the problem is to run the case files.Will you please tell me how to run the case and from where i get the tutorials of GGI because my case is of turbomachinery.
Thanks in advance.
__________________
Simulation Is Determination Of Imagination Towards Approximation


Best Regards

Mubeen K Kurne
kurne is offline   Reply With Quote

Old   February 24, 2011, 13:24
Default
  #8
Senior Member
 
Robert
Join Date: Sep 2010
Posts: 154
Rep Power: 6
lordvon is on a distinguished road
Heres the necessary files to run a case, from my files; youll have to change the BCs etc. (plenty of resources for that on the forums). Youll need to make your own mesh ggi-ready by following these steps (Post #3): Modifying Mixer Ggi.
Attached Files
File Type: zip hhhh.zip (20.7 KB, 10 views)
lordvon is offline   Reply With Quote

Old   February 25, 2011, 00:55
Default
  #9
Member
 
Kurne
Join Date: Aug 2010
Location: Pune, INDIA
Posts: 88
Rep Power: 6
kurne is on a distinguished road
Dear Lordvon
Thanks for reply and posting the case file.Want to ask you one thing that you are running openFOAM 1.5-dev prior to installing it which version of openFOAM you have installed or directly you have install OpenFOAM 1.5-dev and run the case.
I mean that openFOAM 1.5-dev is directly start working without any openFOAM version installation.
__________________
Simulation Is Determination Of Imagination Towards Approximation


Best Regards

Mubeen K Kurne
kurne is offline   Reply With Quote

Old   February 25, 2011, 06:57
Default
  #10
Senior Member
 
Robert
Join Date: Sep 2010
Posts: 154
Rep Power: 6
lordvon is on a distinguished road
You do not need to do anything prior to the installation procedure for 1.5-dev I mentioned; with a fresh ubuntu installation, if you follow the aforementioned installation procedure, you will be ready to run the case immediately (once you have created your own mesh, etc. I deleted the mesh that was with that case file I posted up, so it has no mesh and wont run on its own, but if you follow the mesh generation procedure I linked to in my previous post you can generate one of your own).

Oh, and also I forgot to mention I am only familiar with 2D meshes, but I am sure going to 3D will not be too difficult.
lordvon is offline   Reply With Quote

Old   February 26, 2011, 19:59
Default
  #11
Senior Member
 
Hrvoje Jasak
Join Date: Mar 2009
Location: London, England
Posts: 1,758
Rep Power: 21
hjasak will become famous soon enough
Just for the info: we also have 1.6-ext with further development of the GGI and other turbomachinery-related tools + the new version is in preparation. Please check

http://www.extend-project.de

for details.

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

Old   March 2, 2011, 02:01
Default
  #12
Member
 
Kurne
Join Date: Aug 2010
Location: Pune, INDIA
Posts: 88
Rep Power: 6
kurne is on a distinguished road
Dear Lordvon
Thanks A Lot for giving me guidance and i have successfully installed the OpenFOAM 1.5-Dev and its working too.Thanks Once Again.

Dear Hrv
Thanks a lot for help.I know it and studying too.Well I am happy that you have replied to me.Thanks.
__________________
Simulation Is Determination Of Imagination Towards Approximation


Best Regards

Mubeen K Kurne
kurne 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
Moving mesh Niklas Wikstrom (Wikstrom) OpenFOAM Running, Solving & CFD 122 June 15, 2014 06:20
How to write k and epsilon before the abnormal end xiuying OpenFOAM Running, Solving & CFD 8 August 27, 2013 15:33
Floating point exception error Alan OpenFOAM Running, Solving & CFD 10 April 6, 2012 14:02
Differences between serial and parallel runs carsten OpenFOAM Bugs 11 September 12, 2008 11:16
Unknown error sivakumar OpenFOAM Pre-Processing 9 September 9, 2008 12:53


All times are GMT -4. The time now is 02:09.