UDF for Flexible Airfoil

JoshnaJayes21 · May 1, 2020, 09:58

I'm doing a simulation on ansys fluent for a flexible airfoil. Can you please suggest a UDF for that?

vinerm · May 1, 2020, 15:13

You question is little ambiguous. What do you need UDF for?

JoshnaJayes21 · May 2, 2020, 04:39

Thank you very much for the reply 😊.
I want to make the airfoil to a flexible type and the mesh to a deforming type. I'm new to ansys so I watched some videos and found out that they are using udfs. I'm not certain about what to do.😐

vinerm · May 2, 2020, 16:04

There are two ways to simulate a flexible airfoil and it all depends on the objective. If the deformation is caused by the Fluid, then you have to do an FSI simulation and a UDF may not be required. However, if the objective is to study the effects of an oscillating airfoil on fluid around it, then you can use UDF to model the motion of the airfoil. However, the motion needs to be described by an equation and UDF has to be written for that equation. There are no generic UDFs.

JoshnaJayes21 · May 3, 2020, 08:35

Thank you for your suggestions 😊.
I'll try the FSI simulation.

May 1, 2020, 09:58	UDF for Flexible Airfoil	#1
JoshnaJayes21 New Member JoshnaJayes21 Join Date: May 2020 Posts: 3 Rep Power: 5	I'm doing a simulation on ansys fluent for a flexible airfoil. Can you please suggest a UDF for that?

May 1, 2020, 15:13	Udf	#2
vinerm Senior Member Vinerm Join Date: Jun 2009 Location: Nederland Posts: 2,946 Blog Entries: 1 Rep Power: 35	You question is little ambiguous. What do you need UDF for? JoshnaJayes21 likes this. __________________ Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.

May 2, 2020, 16:04	Flexible Airfoil	#4
vinerm Senior Member Vinerm Join Date: Jun 2009 Location: Nederland Posts: 2,946 Blog Entries: 1 Rep Power: 35	There are two ways to simulate a flexible airfoil and it all depends on the objective. If the deformation is caused by the Fluid, then you have to do an FSI simulation and a UDF may not be required. However, if the objective is to study the effects of an oscillating airfoil on fluid around it, then you can use UDF to model the motion of the airfoil. However, the motion needs to be described by an equation and UDF has to be written for that equation. There are no generic UDFs. JoshnaJayes21 likes this. __________________ Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.

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May 2, 2020, 04:39		#3
JoshnaJayes21 New Member JoshnaJayes21 Join Date: May 2020 Posts: 3 Rep Power: 5	Thank you very much for the reply 😊. I want to make the airfoil to a flexible type and the mesh to a deforming type. I'm new to ansys so I watched some videos and found out that they are using udfs. I'm not certain about what to do.😐

May 3, 2020, 08:35		#5
JoshnaJayes21 New Member JoshnaJayes21 Join Date: May 2020 Posts: 3 Rep Power: 5	Thank you for your suggestions 😊. I'll try the FSI simulation.