[makaveli_lcf]

Originally Posted by Artur

Hi All,

Just wanted to say I (finally) upgraded all of the tutorials to work with OpenFOAM 5.x. Sorry it took so long, but they're here now. I also added a new tutorial showing how to deal with parsing command line arguments and options, following up on some questions asked in this thread a while ago.

Artur

Great job Arthur! Was looking for command line arguments, which I did long time before, and found perfect instructions here!)

Cheers,
Alex

[Artur]

Hi All,


Just wanted to say I added a new tutorial looking at the nuts and bolts of mesh generation. I wanted to get a glimpse of that part of OF myself in line with my recent side project of learning to use Engrid and though it might be interesting to some of you as well. If you're interested in what I've been up to with Engrid check out this post:
Primsatic boundary layer creation fixed


All the best,


Artur

[Artur]

Hi All,


Just wanted to say I added a brief new tutorial on writing custom momentum sources based on an actuator disk example.


All the best,


Artur

[Artur]

Dear All,


Apologies for spamming the thread again the same week, but I just realised a new version of OpenFOAM has been released, so we're now at 6 from the openfoam.org branch. I tested the tutorials and they all seem to work fine without any modifications. I also restructured them a bit to make it easier for me to test them automatically in the future.


All the best


Artur

[febriyan91]

Originally Posted by Artur

Hi Foamers!

I wanted to share with you a couple of simple pieces of codes I wrote to demonstrate basic OpenFOAM functionality to beginner C++ programmers:
https://github.com/UnnamedMoose/Basi...mmingTutorials

The reason for the existence of these is that during my time at a University I've found that many students starting their research using OpenFOAM are required to develop code for it but have little to no prior knowledge of C++. This usually makes it very hard for them to jump from basic programming to the admittedly complex OpenFOAM framework, and also makes using many on-line materials quite challenging. The above tutorials hope to help with making this step. I've "tested" them on a few of my colleagues and collaborators and I hope they may help a wider audience in the future.

Feedback always welcome! But please bear in mind I'm self-taught both in OpenFOAM and C++, so go easy on me

Also, if you'd like to contribute a new tutorial or offer improvements to the ones already there, I'd highly welcome your input!

Happy foaming,

Artur

Thank you so much for sharing!

[Artur]

Hi All,


Just a quick update: I've upgraded the tutorials to work with the new OpenFOAM 7. Changes required were minimal but at least now everything works out-of-the-box.


Happy foaming,


A

[Artur.Ant]

Thank you very much. Appreciate a lot your work. It was a good idea to make some tutorials for the new c++ users.

[Zywx]

Thank you for your job, I'm new in this world and I'm learning a lot with your posts.
I have OF7 and I have an error in all the tutorials and I dont know why.




tutorial1

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

--> FOAM FATAL ERROR:
cannot find file "/home/alexp/OpenFOAM/alexp-7/BasicOpenFOAMProgrammingTutorials-master/OFtutorial01_inputOutput/testCase/controlDict"

From function virtual Foam::autoPtr<Foam::ISstream> Foam::fileOperations::uncollatedFileOperation::rea dStream(Foam::regIOobject&, const Foam::fileName&, const Foam::word&, bool) const
in file global/fileOperations/uncollatedFileOperation/uncollatedFileOperation.C at line 538.

FOAM exiting

In the tutorial2

./Allrun: línea 3: 18058 segmentation fault (core dumped) openfoam ofTutorial2 someWordIPassed 5. -someSwitch -someInt 2 -dict path_to_nowhere_in_particular

./testAll

Checking: OFtutorial00_helloWorld/
PASS: ./Allwmake
FAIL: ./Allrun
Checking: OFtutorial01_inputOutput/
PASS: ./Allwmake
FAIL: ./Allrun
Checking: OFtutorial02_commandLineArgumentsAndOptions/
PASS: ./Allwmake
FAIL: ./Allrun
Checking: OFtutorial03_understandingTheMesh/
PASS: ./Allwmake
FAIL: ./Allrun
Checking: OFtutorial04_basicFieldOperations/

I feel bad for being the only one to have this problem.

[Artur]

Hi,

From the first error message, it seems as though the test case is missing the controlDict file. Are you sure it checked out properly and contains the usual OpenFOAM folder structure?

Regards,

Artur

[khool_chelsea]

Hey thanks. This was just what i needed to get started.

[Gallienus]

Originally Posted by Artur

Hi Foamers!

I wanted to share with you a couple of simple pieces of codes I wrote to demonstrate basic OpenFOAM functionality to beginner C++ programmers:
https://github.com/UnnamedMoose/Basi...mmingTutorials
Artur

Is there some place I can see the tutorials without coding them 1st? When I click on the link I get sent to branches which show code revisions on Github. It's not althogether clear which branch I should follow for a tutorial as often there seem to be over 100 branches for one tutorial.

[Artur]

Hi,

Thanks for the interest in the tutorials. You can view the original materials on the main github site: https://github.com/UnnamedMoose/Basi...mmingTutorials . There you can navigate from one tutorial to another and explore the contents without downloading or compiling anything. To be clear, as I explain in the README, there are no formal slides, notes or any other document beyond the readme. Each tutorial explains everything inside the actual source code, giving you on-the-fly description of what's what and how all the pieces come together.

Hope this helps,

Artur

[Artur]

Just a quick update: I've tested the tutorials with OpenFOAM-8 and it all works fine. I've also merged a tutorial contributed by a member of the community, for which many thanks go to Ramkumar!

Happy foaming,

A

[Artur]

Hi All, another quick update: the tutorials now include an example of how the SIMPLE algorithm works! Mmany thanks to Ramkumar for contributing the tutorial.

[Tobi]

Arthur, thank you for your effort. Do you mind if I put you onto my website under the section Community Contributions?

[Artur]

Originally Posted by Tobi

Arthur, thank you for your effort. Do you mind if I put you onto my website under the section Community Contributions?

Sure, go ahead

[CallumG]

I've just come across the repository and firstly - it's awesome how much time and effrot you've put into it - it's a credit to the community!

Just a quick question, is there any plans for it to work with openfoam.com releases?

Thanks again!
Callum

[Artur]

Hi,
Thanks for the positive feedback Callum, much appreciated!
Not at the moment, no - I don't think it'd be too much work to get it working, as the two versions are not that far apart in terms of basic pieces used in the tutorials, but it would potentially complicate maintenance for me a lot. I decided to use the other branch because that's what I was using at the time I started the tutorials, but I do not have a strong preference over one or the other. If you can convince me it's worth changing, I can rewrite everything to work with the openfoam.com branch But then I'd drop compatibility with the current one.
Cheers,
A

[Yashas Gandhi]

Hello!
I am new to OpenFOAM and trying out these tutorials. I don't understand how appending works in OFtutorial1 and any explanation will be very much appreciated. This is the hash table given in customProperties file:

someHashTable
(
    key0 (0 0 0)
    key1 (1 0 0)
);

Now, in the OFtutorial.C file, we append and write a new entry:

// Append to the imported hash table and wirte it too
    someHashTable.insert("newKey", vector(1., 0., 0.));
    outputFilePtr() << someHashTable << endl;

Now, in output file, we get following:

(
key0 (0 0 0)
newKey (1 0 0)
key1 (1 0 0)
)

So I am confused as to why the new entry got inserted between the two existing entries and not at the end of the table like how usually appending works in Ubuntu.

[Artur]

Hi,


Hash tables are, by definition, unsorted - unlike lists or arrays. Here, specific keys (strings in this case) point to values at specific locations in an underlying data structure. Have a look here: https://en.wikipedia.org/wiki/Hash_t...0_1_0_0_SP.svg


Cheers,


A