[tom.opt]

Hi,
I haven't done a URANS simulation before and i need some help please.
I am looking at running rhoPimpleFoam.
I have previously ran a rhoSimpleFoam simulation and understood that the setup for rhoPimple foam would be very similar with the exception that my system directory would be different.
I am planning on copying openfoam5/tutorials/compressible/rhoPimpleFoam/RAS/cavity/system .
Is there anything that you think i need to modify apart from the deltaT in my control dict?
How do i chose an appropriate deltaT? I understood that it related to cellsize and courant number...but how do i find out my cell size?

Are there any good videos on rhoPimpleFoam?

Kind regards,
Tom