Industrial exhaust pipe

@cbabua, nice to see a new project from you - looks like there is some sort of sim error. Would you like me to take a look?

Of course

Hey @cbabua,

nice mesh! You might want to cancel your simulation as the auto timestep is down to ~0.0005 s, which means it would probably take weeks to compute 2000 s. But I am looking forward to the first results.

Best Alex

i was waiting and waiting …
auto timestep? now i am limited the maximum runtime…

with limiting the simulation time step it canceled every time…but the convergence plot is looking normal? why it does not work? ^^
thanks a lot!

Hey @cbabua,

Cool looking public project thumbnail btw!

cylinder.png260×195 10.6 KB

Right now you have the maximum runtime limited to 3000 s in your settings, which means it will cancel the run automatically after ~50 min. If you look at the runtime of your last run, that is exactly what happened there. Are the different settings in the simulation control (Timestep length, auto-timestepping, simulation time vs run time etc.) all clear to you? Otherwise I am happy to help! You can also find a lot of information in the documentation, e.g. here Incompressible Fluid Flow Analysis | Analysis Types | SimScale. At the bottom of the page the simulation control settings are explained. I’m looking forward to your next setups.

Best Alex

Thank @afischer Great link !
I was confused because the simulation ends (runtime 3000s) and not converge
now:
end time value= 500
time step length=1
it means, 500 iterations. quite a lot
auto timestepping… i don`t know how?! you wrote something about ~0.0005 s. but i do not really understand this number
run time = real time -> limiting with maximum runtime
simulation time = core hours
so far…