so I finally found the culprit. so I had 3 functions in system/functions file. I carried back from previous versions where it was working correctly. two of the three functions are coded. when I run in a new terminal, with V12 no problem it runs. I run in a new terminal, with v13 it crashes, and if i re run foamRun it runs. IF i comment one of the coded functions, whichever one, no matter and I run in a new terminal, with V13 it does not crashes.

here are the functions

even black magic makes sense once you've found the source of the issue 😃

well not so much, same functions in v12 were okey together....

yeah but it's not crazy to have a coded FO breaking when switching versions especially on .org

Now I wonder, when it compiles these during first run, does it give any warnings/errors?

Why use const_cast here?

TRYING to follow this tutorial https://cdn.discordapp.com/attachments/400697259819270145/1393280552890531941/image.png?ex=68729921&is=687147a1&hm=74e329031f23cc741548da91397d39df0f0d8b6e6fcaf9fa708bbaa34fc2c8bc&

but got this error

can it also be used to test pressure vessels or can the meshes themselves not actually react to the fluid

Sincerently I can not remember, I got it work a time ago, it did what it needed to do and worked so I keeped.... Never had the time to learn c++ so I do what I can 😅

here you have more info https://bugs.openfoam.org/view.php?id=4255#c13613

next week when i have acces i will post the complete thing they asked me

Const_cast is basically brute forcing to get modifiable access to const reference (some classes do not provide non const access functions for safety, like turbulence...and the only way is this or add a function and recompile the class).. const_cast isnt exactly good practice but useful in a crunch :p But here you could have also used lookupObjectRef() I think 🤔

well it is confirmed that it was a bug and it got fixed on dev https://bugs.openfoam.org/view.php?id=4255#c13628

also, merging the two functions to one made it work without any problem.

1- What OpenFOAM version did you install? 2- Did you load the OpenFOAM environment before typing these commands?

The newest non-dev release I guess And I think so. I don't know, I don't use linux

OpenFOAM-13?

I believe so yes

The tutorial you want to follow use another development branch (OpenCFD: openfoam.com)

OpenFOAM-13 is from the OpenFOAM foundation branch (openfoam.org)

Things work slightly differently in these 2 branches. For instance, the tutorial path you try to copy does not exist in the foundation branch

I suggest to install the OpenFOAM version matching the tutorial you want to follow. (or the other way around: find tutorials corresponding to the version you installed)

Hey, was characteristic length of a jet the width or width/2 ? I forgot

If I gave you a jet and a pair of callipers or a ruler, which one would you be able to measure?

I suppose its the entire width 😄 The half width was used to normalize the values I remember haha thank you

GUYS 🥲 I cannot find my sets from topoSet in paraview 😦 does anyone know where I can find them?