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-   -   Flow Between Two Parallel Plate (http://www.cfd-online.com/Forums/fluent/62725-flow-between-two-parallel-plate.html)

 interawe March 18, 2009 03:04

Flow Between Two Parallel Plate

Hi
I want to simulate the Flow Between Two Parallel Plate in fluent one of plate is moving how can i do that.
Regards.

 paka March 20, 2009 05:37

Create model with two plates, then apply to one of the models UDF function describing its motion.

 interawe March 20, 2009 09:06

Hi friend
Thanks for your replay, I want to tell you that my two plates on is horizontal and the other is incline by an angle (Alfa) how can I do the udf for for the incline plate I can do for horizontal plate .
Regards.
Mustafa

 paka March 20, 2009 15:18

Calculate its motion in its coordinates. Then apply this function to UDF. I would advise you to go through whole UDF Fluent Documentation and to get over UDF tutorials.

As far as I remember, in UDF I guess you cannot define really displacement, the only thing (I might be mistaken, this is only what I think I remember) is to define the velocity or acceleration of one of the boundaries.

For example, I would define velocity function which corresponds to your boundary motion. Then monitor (Surface->Monitors) BC motion, by dumping displacements (Grid tab in X and Y) in x and y direction into two separate files. This way from your previous calculation (I would do first a stand alone Excel, C, Python, or whatever else) verify your results comparing output from Fluent to your routine.

Hope this helps,
Krst

 mbernard March 21, 2009 10:25

moving walls

Hello. I think there's an eaisier and faster way to do that stuff. I think you can aplly a velocity to your walls in the Boudary conditions paneL. you can fin d a part called " moiving wall" where you can define the velocity of your boundary.
Let us know about the solution you choose

Regards

 paka March 22, 2009 18:13

Yes, actually that is true. Forgive me, sometimes too much sophisticated work stop making you think simple way ;)

You can definitely apply velocity to your BC.

Best,
Krst

 mbernard March 23, 2009 06:51

hi