GREAT sir!! i am beginner openfoam and i learned openfoam from scratch from your youtube tutorial. i am learning cfd because people like you are still helping to begginers
Jozsef, I love your tutorials! the are a great place to start. Looking forward to seeing more videos and hope to become an OpenFoam ninja like you some day :)) Keep up the good work.
Hi Jozsef, Thank you for the video. I will be learning openFOAM from scratch. I would like to know what programming background is needed if any to learn it. Also, what other background is necessary? Thanks!
hey József, first of all, thanks for this video and for all of your OpenFOAM/Linux videos in general. Your channel, combined with the tutorials and documentation on the OpenFOAM wiki, have made this open-source framework much more accessible. So again, thanks a lot for your efforts. A slight issue is that after having followed the instructions as per this video, the bash does not seem to recognise the "fluent" command, even after I am in OpenFOAM/OpenFOAM-v1812/tutorials/incompressible/icoFoam/elbow. Any ideas on what could be causing this? I have made certain I have sourced everything correctly. I copied the tar file using: cp -ar /mnt/c/Users//Downloads/OpenFOAM-v1812-windows10.tgz . Then I untarred using: sudo tar xvf OpenFOAM-v1812-windows10.tgz After extraction, I went into bashrc using: nano .bashrc . I put in this at the bottom: source $HOME/OpenFOAM/OpenFOAM-v1812/etc/bashrc Sorry for the lengthy message. I've tried Googling, looking on the OpenFOAM wiki and also on the CFD-online.com forums, but I couldn't find anything. I'd appreciate any help on this. Thanks.
@@OpenFOAMJozsefNagy thanks for the reply. I think I accidentally posted on here because my comment is actually in response to this video on installing OpenFOAM in Windows 10: ua-cam.com/video/xj0dB_PsElg/v-deo.html& I am not at all familiar with Linux or the terminal so sorry beforehand. I'm not sure where exactly my folder is, I presume this line: /mnt/c/Users//Downloads/OpenFOAM-v1812-windows10.tgz . Means it gets copied into my home? And then I untar in the same folder so I think it's in my home. When I type in "ls" in the default location, the OpenFOAM folder shows up so I think it's in my home folder.
Hello Jozsef, thank you that you are back. Can you please make a tutorial about Aerodynamic Simulation and evaluation of ahmed body in OpenFoam? It would be very kind of you. Thank you
I tried it once. I am not an expert in the field, but I know, that there is the one solver for the shallow water equations in OpenFOAM and also there is a solver from a german guy, who wrote his own solver in OpenFOAM for the modeling of rivers. Check out his github account: github.com/mintgen/shallowFoam For very small sections of rivers you cuold try interFOAM, but the computational effort is much much higher.
your videos are really good. These helped a lot. but in a simulation, I am getting these errors. please help me debugging these. Also please make a video on "how to debug errors in OpenFoam"... [1] #0 Foam::error::printStack(Foam::Ostream&) at ??:? [1] #1 Foam::sigFpe::sigHandler(int) at ??:? [1] #2 ? in "/lib/x86_64-linux-gnu/libpthread.so.0" [1] #3 Foam::GAMGSolver::scale(Foam::Field&, Foam::Field&, Foam::lduMatrix const&, Foam::FieldField const&, Foam::UPtrList const&, Foam::Field const&, unsigned char) const at ??:? [1] #4 Foam::GAMGSolver::Vcycle(Foam::PtrList const&, Foam::Field&, Foam::Field const&, Foam::Field&, Foam::Field&, Foam::Field&, Foam::Field&, Foam::Field&, Foam::PtrList&, Foam::PtrList&, unsigned char) const at ??:? [1] #5 Foam::GAMGSolver::solve(Foam::Field&, Foam::Field const&, unsigned char) const at ??:? [1] #6 Foam::fvMatrix::solveSegregated(Foam::dictionary const&) at ??:? [1] #7 Foam::fvMatrix::solve(Foam::dictionary const&) at ??:? [1] #8 ? at ??:? [1] #9 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" [1] #10 ? at ??:?
Well GAMGSolver::scale says, that there is a problem with solving the matrix. This can have a lot of reasons. Bad mesh, division by zero (especially in compressible solvers) etc. Difficult to say without more information.
Don't worry, I didn't switch. Currently I am running three different desktop versions of Ubuntu, three different server editions of Ubuntu plus Centos on the computers. Also I use Windows 7 and Windows 10 if I need them. It depends on the software I need. Don't worry you will be able to follow me in Linux ;) But I noticed, that most of you (~57%) watch my videos from Windows, which surprised me.
![Lp. Сердце Вселенной #60 РОЖДЕНИЕ ЛОЛОЛОШКИ [Финал] • Майнкрафт](http://i.ytimg.com/vi/YoR0pAV9FVQ/mqdefault.jpg)
This initiative is really good. I have started to follow the "3 week" series and it's really organized well.
Great! I am always glad to help.
are there any tutorials on solidification of binary alloys or pure materials?
@@peshemak7 Not to my knowledge, unfortunately.
GREAT sir!! i am beginner openfoam and i learned openfoam from scratch from your youtube tutorial. i am learning cfd because people like you are still helping to begginers
I am glad I can help.
Oh! You're back!!! Thanks to you and to Tobias i learned a lot about OF!! Thanks József
Tobi's contributions are great! We regularly talk (at least at the Austrian OpenFOAM User Meetings and via email) and try to help you!
It's fantastic! This is exactly what I am finding to begin with OpenFOAM. Thank you very much, Jozsef!
I am glad it helps.
excellent idea, excellent contributions by you great OpenFOAMers !
Thank you!
Jozsef,
I love your tutorials! the are a great place to start.
Looking forward to seeing more videos and hope to become an OpenFoam ninja like you some day :))
Keep up the good work.
Thanks, Adam!
Danke schön Herr Nagy, köszönöm
Hi Jozsef, Thank you for the video. I will be learning openFOAM from scratch. I would like to know what programming background is needed if any to learn it. Also, what other background is necessary? Thanks!
Amazing explanation, thank you
hey
József,
first of all, thanks for this video and for all of your OpenFOAM/Linux videos in general. Your channel, combined with the tutorials and documentation on the OpenFOAM wiki, have made this open-source framework much more accessible. So again, thanks a lot for your efforts.
A slight issue is that after having followed the instructions as per this video, the bash does not seem to recognise the "fluent" command, even after I am in OpenFOAM/OpenFOAM-v1812/tutorials/incompressible/icoFoam/elbow. Any ideas on what could be causing this? I have made certain I have sourced everything correctly.
I copied the tar file using: cp -ar /mnt/c/Users//Downloads/OpenFOAM-v1812-windows10.tgz .
Then I untarred using: sudo tar xvf OpenFOAM-v1812-windows10.tgz
After extraction, I went into bashrc using: nano .bashrc .
I put in this at the bottom: source $HOME/OpenFOAM/OpenFOAM-v1812/etc/bashrc
Sorry for the lengthy message. I've tried Googling, looking on the OpenFOAM wiki and also on the CFD-online.com forums, but I couldn't find anything. I'd appreciate any help on this. Thanks.
Where is your OpenFOAM folder. In your home?
@@OpenFOAMJozsefNagy thanks for the reply. I think I accidentally posted on here because my comment is actually in response to this video on installing OpenFOAM in Windows 10: ua-cam.com/video/xj0dB_PsElg/v-deo.html&
I am not at all familiar with Linux or the terminal so sorry beforehand. I'm not sure where exactly my folder is, I presume this line:
/mnt/c/Users//Downloads/OpenFOAM-v1812-windows10.tgz .
Means it gets copied into my home? And then I untar in the same folder so I think it's in my home. When I type in "ls" in the default location, the OpenFOAM folder shows up so I think it's in my home folder.
@@alovyachowdhury9143What do you get when you type ls $HOME?
Excellent 👍
Great initiative!
Thanks!
Can you please do a vedio on installation of olaflow and ihfoam and its tutorials also
Hello Jozsef, thank you that you are back. Can you please make a tutorial about Aerodynamic Simulation and evaluation of ahmed body in OpenFoam? It would be very kind of you. Thank you
I will keep it in mind.
question, the 3 week formation, is still updated? thanks :)
Yes, we try to keep it up to date once a year.
Hello József!!
Is openFOAM the right software if I want to simulate a small river?
I tried it once. I am not an expert in the field, but I know, that there is the one solver for the shallow water equations in OpenFOAM and also there is a solver from a german guy, who wrote his own solver in OpenFOAM for the modeling of rivers. Check out his github account: github.com/mintgen/shallowFoam For very small sections of rivers you cuold try interFOAM, but the computational effort is much much higher.
Oh my god , terminal! is it about something like 'terminator'? )))
your videos are really good. These helped a lot. but in a simulation, I am getting these errors. please help me debugging these. Also please make a video on "how to debug errors in OpenFoam"...
[1] #0 Foam::error::printStack(Foam::Ostream&) at ??:?
[1] #1 Foam::sigFpe::sigHandler(int) at ??:?
[1] #2 ? in "/lib/x86_64-linux-gnu/libpthread.so.0"
[1] #3 Foam::GAMGSolver::scale(Foam::Field&, Foam::Field&, Foam::lduMatrix const&, Foam::FieldField const&, Foam::UPtrList const&, Foam::Field const&, unsigned char) const at ??:?
[1] #4 Foam::GAMGSolver::Vcycle(Foam::PtrList const&, Foam::Field&, Foam::Field const&, Foam::Field&, Foam::Field&, Foam::Field&, Foam::Field&, Foam::Field&, Foam::PtrList&, Foam::PtrList&, unsigned char) const at ??:?
[1] #5 Foam::GAMGSolver::solve(Foam::Field&, Foam::Field const&, unsigned char) const at ??:?
[1] #6 Foam::fvMatrix::solveSegregated(Foam::dictionary const&) at ??:?
[1] #7 Foam::fvMatrix::solve(Foam::dictionary const&) at ??:?
[1] #8 ? at ??:?
[1] #9 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
[1] #10 ? at ??:?
Well GAMGSolver::scale says, that there is a problem with solving the matrix. This can have a lot of reasons. Bad mesh, division by zero (especially in compressible solvers) etc. Difficult to say without more information.
Nooo you switched to windows :((
Don't worry, I didn't switch. Currently I am running three different desktop versions of Ubuntu, three different server editions of Ubuntu plus Centos on the computers. Also I use Windows 7 and Windows 10 if I need them. It depends on the software I need. Don't worry you will be able to follow me in Linux ;) But I noticed, that most of you (~57%) watch my videos from Windows, which surprised me.