Hello everyone,
I want to use an input parameter from workbench to define the specific heat of my working fluid. Do you have any idea how to do this? Should I use udf?
The Cp is not dependent on Temperature, and it is only dependent on the input parameter from workbench parameters
I think that you do not have to use UDF; UDF are useful if you want to add functionalities to Ansys Fluent (e.g., new viscosity models, temperature- and pressure-dependent material properties etc.).
Now, your Cp depends on workbench inputs. You can define Parameters in Ansys FLUENT to deal with such situations.
Maybe, for material parameters this should be very simple, when dealing with Workbench interface; let's see the following discussion:
https://forum.ansys.com/forums/topic/parametrizing-material-properties/
For completeness, I tried this approach with inlet boundary condition (pressure inlet) and it works; the same can be done, for example, when dealing with mesh sizing.
Let's see this video, as an example of Parametrization:
https://www.youtube.com/watch?v=jAnufVoWITQ&ab_channel=ANSOL
Best regards,
AP
Thank you Alessio, the problem is that the Cp that I want to put as a property, is a function of another input parameter (phi) that is produced by design of experiments. if I put Cp as a input parameter and I enable it in DOE, it can not understand the relation between phi and Cp so it gives me wrong design points.
I need to create a relation between Cp and phi, if I want to use UDF I don't know how to define phi inside the code because it is an input parameter.
if I want to use Cp as an input parameter I can't define the relation between it and phi.
I think you could add the expression in Fluent to define the relationship between Cp and phi (another input parameter).
For details of the expression see the following discussion:
https://www.ansys.com/training-center/course-catalog/fluids/ansys-fluent-expressions-language
best regards,
Zhangwei Feng
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