Rotating Brake Disc, rotational velocity function

chrisnied · February 29, 2016, 05:58

Hello CFD Online members

I'm new in ANSYS Fluent. I'm trying to calculate the flow around a rotating disc. For this purpose I have received an EXCEL table. There you can find lots of time points [s] and the corresponding rotational velocity around the z-axis [rad s^-1]. Now I want to use the data to create a function, so FLUENT selects automatically the "right" velocity, based on the time point.

How can I do it?

It would be nice, if you could help me.

greetings
chris

edd313 · March 1, 2016, 20:16

You need to write a UDF. I am not sure but you may use DEFINE_ZONE_MOTION. You should definitely check the UDF manual to find a solution to your problem anyway.

February 29, 2016, 05:58	Rotating Brake Disc, rotational velocity function	#1
chrisnied New Member Christoph Join Date: Feb 2016 Posts: 2 Rep Power: 0	Hello CFD Online members I'm new in ANSYS Fluent. I'm trying to calculate the flow around a rotating disc. For this purpose I have received an EXCEL table. There you can find lots of time points [s] and the corresponding rotational velocity around the z-axis [rad s^-1]. Now I want to use the data to create a function, so FLUENT selects automatically the "right" velocity, based on the time point. How can I do it? It would be nice, if you could help me. greetings chris

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March 1, 2016, 20:16		#2
edd313 New Member Edoardo Join Date: Nov 2015 Posts: 6 Rep Power: 11	You need to write a UDF. I am not sure but you may use DEFINE_ZONE_MOTION. You should definitely check the UDF manual to find a solution to your problem anyway.