UDF to simulate liquid with certain frequecy vibration

Jegan · April 6, 2019, 02:25

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.

Jegan · April 11, 2019, 13:17

anyone please...how to simulate a liquid with frequency value in fluent

AlexanderZ · April 12, 2019, 01:29

frequency of what?

best regards

Jegan · April 12, 2019, 03:04

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

Jegan · April 13, 2019, 05:10

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

Jegan · April 18, 2019, 06:38

Anyone pls... im stuck here.. hope someone will help me with this.

AlexanderZ · April 18, 2019, 21:37

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)

best regards

Jegan · April 19, 2019, 00:32

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.

April 6, 2019, 02:25	UDF to simulate liquid with certain frequecy vibration	#1
Jegan Member samm Join Date: Feb 2019 Location: South Korea Posts: 39 Rep Power: 7	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.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
problem in temperature and liquid fraction value in the udf	durg	FLUENT	0	October 23, 2018 02:52
Error when trying to simulate with a DEFINE_SOURCE UDF	PapaJoz	FLUENT	1	May 10, 2017 07:37
how to use UDF to obtain the thred of the interface between the liquid and the wall?	hellowqy	Fluent UDF and Scheme Programming	8	December 17, 2015 11:03
How to simulate the process of water evaporation by UDF?	qiyang860908	Fluent UDF and Scheme Programming	10	January 9, 2015 14:59
can VOF simulate 3 phase fluid?should i use UDF??	sincity	FLUENT	0	July 18, 2011 08:53

April 11, 2019, 13:17		#2
Jegan Member samm Join Date: Feb 2019 Location: South Korea Posts: 39 Rep Power: 7	anyone please...how to simulate a liquid with frequency value in fluent

April 12, 2019, 01:29		#3
AlexanderZ Senior Member Alexander Join Date: Apr 2013 Posts: 2,363 Rep Power: 34	frequency of what? best regards

April 12, 2019, 03:04		#4
Jegan Member samm Join Date: Feb 2019 Location: South Korea Posts: 39 Rep Power: 7	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

April 13, 2019, 05:10		#5
Jegan Member samm Join Date: Feb 2019 Location: South Korea Posts: 39 Rep Power: 7	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

April 18, 2019, 06:38		#6
Jegan Member samm Join Date: Feb 2019 Location: South Korea Posts: 39 Rep Power: 7	Anyone pls... im stuck here.. hope someone will help me with this.

April 18, 2019, 21:37		#7
AlexanderZ Senior Member Alexander Join Date: Apr 2013 Posts: 2,363 Rep Power: 34	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) best regards

April 19, 2019, 00:32		#8
Jegan Member samm Join Date: Feb 2019 Location: South Korea Posts: 39 Rep Power: 7	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.