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sai193 September 24, 2020 07:31
steady state rotor simulation using overset mesh and mrf
 
3 Attachment(s)
I am trying to model a rotor in steady state using a mrf, but the mrf-zone intersects other parts of the geometry because of their proximity with the rotor.

To get around this I was wondering if overset meshing can be used.

In my case (looking at the rotor in isolation), I have this cylindrical overset-zone, with an MRF applied to it (P1).

Mapping background mesh (P2)
Mapping rotor/front mesh (P3)

The overSimpleFoam simulation seems to run fine but the forces are way off (the viscous forces predictions especially are too big).

Does anyone know if this is a feasible approach?

Attachment 80323

Attachment 80324

Attachment 80325

ozi April 14, 2023 08:30
Able to find a solution
 
Did you able to find a solution?


Quote:
Originally Posted by sai193 (Post 783627)
I am trying to model a rotor in steady state using a mrf, but the mrf-zone intersects other parts of the geometry because of their proximity with the rotor.

To get around this I was wondering if overset meshing can be used.

In my case (looking at the rotor in isolation), I have this cylindrical overset-zone, with an MRF applied to it (P1).

Mapping background mesh (P2)
Mapping rotor/front mesh (P3)

The overSimpleFoam simulation seems to run fine but the forces are way off (the viscous forces predictions especially are too big).

Does anyone know if this is a feasible approach?

Attachment 80323

Attachment 80324

Attachment 80325


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