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interawe March 18, 2009 02:04

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

paka March 20, 2009 04:37

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

interawe March 20, 2009 08:06

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 .

paka March 20, 2009 14:18

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,

mbernard March 21, 2009 09:25

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


paka March 22, 2009 17:13

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.


mbernard March 23, 2009 05:51

Don't worry about your answer, which is more accurate than mine.

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