[oscar_urri]

Hello Foamers,

i have a couple of questions about the rotating reference frame solvers in OpenFoam.

i'm simulating a blade in half a cylinder, now the blade is static (represented by a force),

and the entire domain has to move.

i've been reading the threads and OpenFoamWiki,

so from my understanding it would be the same if i use SRFSimpleFoam or if i use SimpleFoam.

so my questions are:

In SRFSimpleFoam i can define the axis of rotation but i'm unable to define the origin of my rotation, so is the origin going to be (0,0,0) all the time? or if there a way to set it?

when i see SimpleFoam with the MRF option (MRFSimpleFoam), i can define the axis and the origin.

would it be the equivalent of SRF if i define the entire domain as the cellzone that rotates?

also when i use simpleFoam (domain with no obstacles in constant rotation), my inlet bc is fixedvalue (5,0,0), and my omega is 700rpm, but when i see my boundary in parafoam after a couple of iterations it becomes (0, something, something).
i understand if it adds the rotational forces but why is setting my axial inflow to 0 when it's suppose to be fixed to 5?

and in the internal field my axial velocity tends to 0 and gets negative values even.


if someone could throw some light into this i would really appreciate it

thanks

Oscar