GGI initial value definition: any effect?

lordvon · January 27, 2011, 22:09

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?

kurne · January 27, 2011, 22:51

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.

lordvon · January 27, 2011, 22:58

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.

kurne · January 27, 2011, 23:17

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.

kurne · February 24, 2011, 02:46

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

lordvon · February 24, 2011, 06:00

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.

kurne · February 24, 2011, 07:27

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.

lordvon · February 24, 2011, 12:24

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): http://www.cfd-online.com/Forums/ope...mixer-ggi.html.

kurne · February 24, 2011, 23:55

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.

lordvon · February 25, 2011, 05:57

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.

hjasak · February 26, 2011, 18:59

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

kurne · March 2, 2011, 01:01

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.

January 27, 2011, 22:09	GGI initial value definition: any effect?	#1
lordvon Senior Member Robert Join Date: Sep 2010 Posts: 158 Rep Power: 15	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?

January 27, 2011, 22:51		#2
kurne Member Kurne Join Date: Aug 2010 Location: Pune, INDIA Posts: 88 Rep Power: 15	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

January 27, 2011, 23:17		#4
kurne Member Kurne Join Date: Aug 2010 Location: Pune, INDIA Posts: 88 Rep Power: 15	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

February 24, 2011, 02:46		#5
kurne Member Kurne Join Date: Aug 2010 Location: Pune, INDIA Posts: 88 Rep Power: 15	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

February 24, 2011, 07:27		#7
kurne Member Kurne Join Date: Aug 2010 Location: Pune, INDIA Posts: 88 Rep Power: 15	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

January 27, 2011, 22:58		#3
lordvon Senior Member Robert Join Date: Sep 2010 Posts: 158 Rep Power: 15	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.

February 24, 2011, 06:00		#6
lordvon Senior Member Robert Join Date: Sep 2010 Posts: 158 Rep Power: 15	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.

February 24, 2011, 23:55		#9
kurne Member Kurne Join Date: Aug 2010 Location: Pune, INDIA Posts: 88 Rep Power: 15	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

February 25, 2011, 05:57		#10
lordvon Senior Member Robert Join Date: Sep 2010 Posts: 158 Rep Power: 15	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.

February 26, 2011, 18:59		#11
hjasak Senior Member Hrvoje Jasak Join Date: Mar 2009 Location: London, England Posts: 1,905 Rep Power: 33	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

March 2, 2011, 01:01		#12
kurne Member Kurne Join Date: Aug 2010 Location: Pune, INDIA Posts: 88 Rep Power: 15	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

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