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-   -   How to simulate flows between two counter-rotating disks in a chamber? (http://www.cfd-online.com/Forums/fluent/98703-how-simulate-flows-between-two-counter-rotating-disks-chamber.html)

 Pooh March 16, 2012 13:50

How to simulate flows between two counter-rotating disks in a chamber?

Hello folks:

I am trying to simulate flows between two counter-rotating parallel disks (open at the rim) inside a static cylinder chamber. I know I can use sliding mesh by applying an interface (1) between the disks. But since there will also be relative motion between the disk and the static chamber, do I also need designate interfaces between the disk grids and the chamber grid, i.e., interface (2) and (3) for the two disk grids? Then Interfaces (2) and (3) will be normal to interface (1).

 sunflower March 18, 2012 22:45

Hi Poon,

I think you can try Multiple Reference Frame (MRF) first for steady-state simulation first.

You need to create two volumes to enclose two rotating disks respectively. Then you can define interface (2) and (3) you mentioned as interior. You don't have create interface (1).

Hope this can help.

Sunflower

Quote:
 Originally Posted by Pooh (Post 349890) Hello folks: I am trying to simulate flows between two counter-rotating parallel disks (open at the rim) inside a static cylinder chamber. I know I can use sliding mesh by applying an interface (1) between the disks. But since there will also be relative motion between the disk and the static chamber, do I also need designate interfaces between the disk grids and the chamber grid, i.e., interface (2) and (3) for the two disk grids? Then Interfaces (2) and (3) will be normal to interface (1). Please help!

 Marya June 22, 2015 02:31

Hi Pooh,

Did you solve the problem? Could you give me a comment how did you solve it? I am struggling with the same case.

Quote:
 Originally Posted by Pooh (Post 349890) Hello folks: I am trying to simulate flows between two counter-rotating parallel disks (open at the rim) inside a static cylinder chamber. I know I can use sliding mesh by applying an interface (1) between the disks. But since there will also be relative motion between the disk and the static chamber, do I also need designate interfaces between the disk grids and the chamber grid, i.e., interface (2) and (3) for the two disk grids? Then Interfaces (2) and (3) will be normal to interface (1). Please help!

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