[asmita]

Hello,
I tried doing as you said. N it did created volumes.but my total mesh is in 100 KB. which should not be the case.I want mesh in 100 MB's and more. Also once when I tried to import that mesh in Fluent I couldn't see the rectangle.Only turbine was imported.This means my geometry wasn't good.

[-mAx-]

That means your volume has not been imported.
Your turbine should appear as surface and not as a volume.
Did you receive any warning while exporting mesh from Gambit (like warn unmeshed entity are not exported)

[asmita]

No. It did not gave me any warning. N when u say that turbine should be surface and not volume, what exactly do u mean ? Because when I sweep the face of turbine it creates volume.And i do want volume for both turbine and rectangle.
Do Split -Face option help? My friend suggested to split-face turbine from rectangle, then mesh and sweep it. But that is not helping me either.

[-mAx-]

You have 2 volumes: your outer domain and the impeller.
If you subtract the outer domain with the impeller, then you get the outer domain with impeller as hollow.
That means your impeller is only represented by its outside surfaces.
And the volume represents the fluid domain around the impeller.

[asmita]

Hii, thanks for the advice.. I got my geometry done. But now i have to restrict the motion of turbine in all directions i.e. translational and rotational except for rotation in x-direction. How do i do that..? Do i use the 'specify continuum types' in zones option in Gambit ? Do i define turbine as fluid or solid type for that?
Please help me

[-mAx-]

do you want moving mesh, Single or Multiple Reference..?
check here:
http://aerojet.engr.ucdavis.edu/flue...ug/node412.htm
http://aerojet.engr.ucdavis.edu/flue...ug/node436.htm

[asmita]

Moving mesh...

[-mAx-]

then you have to disconnect rotor zone to stator zone.
Doing this, you will able to set interfaces between both zones (one interface for rotor, and one for stator).
Then fluent will be able to move rotor zone, and data will be interpolated on interfaces (which you have to define "again" in fluent /define/grid-interfaces)

[asmita]

How to disconnect rotor from the rectangle ?

[-mAx-]

do a split to distinguish rotor from stator.
If the split is well done, then both domains are connected, which is not wanted.
So copy rotor zone with any translations-vector.
Delete original rotor zone.
Now you can see your stator with an hollow.
Define the interface face (stator side)
Define the interface face (copy of rotor side)
Move back the rotor zone.
That's it (Now both interfaces are stacked)