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UDF to simulate liquid with certain frequecy vibration

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Old   April 6, 2019, 01:25
Default UDF to simulate liquid with certain frequecy vibration
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samm
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Hello,

I need UDF to simulate liquid in container, having liquid at bottom with certain frequency to create a droplet clouds. please share some ideas to build UDF.
considered liquid is kerosene and I'm working In fluent.
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Old   April 11, 2019, 12:17
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anyone please...how to simulate a liquid with frequency value in fluent
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Old   April 12, 2019, 00:29
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frequency of what?

best regards
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Old   April 12, 2019, 02:04
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Thank you for your response,

Frequency of ultrasonic transducer, Its an experimental work,where kerosene at bottom of the chamber and with the help of ultrasonic transducer it provide 24MHz to simulate that liquid ,by that it forms droplet clouds. Now I dont know how to approach that same thing in fluent.. please help me.

Thanks
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Old   April 13, 2019, 04:10
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I found some equation... anyone please help me how to write udf for this

Pu = Pa cos {w(t+ z/c)}
where Pa = root 2I row c
I= Pus / A

Pa- amplitude of sound pressure
w(omega)- 2 pi f angular freq
t time
z space coordinates
c sound speed in water
f frequency
I sound intensity
Pus ultrasonic power
A ultrasonic transducer area.

please help me with this
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Old   April 18, 2019, 05:38
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Anyone pls... im stuck here.. hope someone will help me with this.
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Old   April 18, 2019, 20:37
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the problem is how are you going to simulate this, are you going to use DPM?
equations and UDF is not a problem
I suggest you to move this thread to FLUENT branch (not Fluent UDF)

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Old   April 18, 2019, 23:32
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Thank you so much for your response..

yes im going to use DPM... after that how can I approach..?

ill move this thread as per your advice.

Thanks,
Jegan.
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