(0.orig) or (0) and this error "cannot find file "/home/x/elbow_tri/0/p"

[lubiole]

Hello everyone,

I hope that i'm positing in the right channel,

So i'm a bit new to OpenFOAM and i know that there is some differences between each version. As a starter i wanted to follow Jozsef Nagy video about the elbow tutorial, and when i try to launch the simulation i get this error "cannot find file "/home/x/elbow_tri/0/p"

in fact, i have fixed it by changing the name of the folder "0.orig" to "0" and it worked perfectly, but i'm still wondering why did openFoam change the name of the folder, is there something that i did not setup correctly or something that i'm missing in my solver ?

Thank you!
Regards,
Lubiole

[nuenen313]

Hi @lubiole,
the 0.orig folder contains the original boundary conditions (hence the name), and it can be used to recover them if needed. If I remember correctly, the OpenFOAM version Jozsef Nagy uses is 2.3.0, so the naming might have been different. Sometimes you will find the 0.orig folder instead of the 0 folder in the case structure, and the best course of action is to copy it (e.q. cp -r 0.orig 0), so that the original boundary and initial conditions are always there, and the simulation runs properly (the 0 folder is necessary for that).