User-Defined Function in Fluent

berkakdemir · February 8, 2024, 13:56

Hey guys. Im planning to write a my thesis and a udf file in ansys for a nanofluid under external magnetic field should be written.

I've no idea how to write UDF.

Is there any courses or documentary to learn except ANSYS User Manuel.

Thanks

@ss · February 13, 2024, 00:29

First of all, Thank you sir for your response.....
sir, I am working on energy harvesting from vortex-induced vibration in which I use non-linear spring stiffness instead of linear stiffness in the spring mass damper system using OpenFOAM software.

my ̈ + Cy ̇ + ky +by^3= Fy

I am not able to introduce nonlinearity in the motion equation in openFoam and also I am not able to find any video or tutorials related to this.
I have done simulations with linear systems for isolated and multi-body but have not been able to do with non-linear systems.
or
Can I do it on ANSYS fluent if it is not possible for OpenFoam ???

February 8, 2024, 13:56	User-Defined Function in Fluent	#1
berkakdemir New Member Berk Akdemir Join Date: Mar 2021 Posts: 3 Rep Power: 5	Hey guys. Im planning to write a my thesis and a udf file in ansys for a nanofluid under external magnetic field should be written. I've no idea how to write UDF. Is there any courses or documentary to learn except ANSYS User Manuel. Thanks

February 13, 2024, 00:29	Nonlinear spring stiffness	#2
@ss New Member shristi Join Date: Jun 2023 Posts: 21 Rep Power: 2	First of all, Thank you sir for your response..... sir, I am working on energy harvesting from vortex-induced vibration in which I use non-linear spring stiffness instead of linear stiffness in the spring mass damper system using OpenFOAM software. my ̈ + Cy ̇ + ky +by^3= Fy I am not able to introduce nonlinearity in the motion equation in openFoam and also I am not able to find any video or tutorials related to this. I have done simulations with linear systems for isolated and multi-body but have not been able to do with non-linear systems. or Can I do it on ANSYS fluent if it is not possible for OpenFoam ???

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