Linking UDF and workbench parameter

saeedakhavan · April 14, 2021, 12:44

Hi.
I need to calculate some variables in an UDF and pass these variables to workbench parameters (i.e., updating parameters by UDF) for optimization purposes. Any suggestions?

AlexanderZ · April 15, 2021, 02:19

you may get input parameter in UDF using macro

Code:

RP_Get_Input_Parameter("variablename")

more information in Ansys Fluent Customization manual

saeedakhavan · April 15, 2021, 02:25

Thank you for your response Alexander.

I suppose RP_Get_Input_Parameter() just reads the workbench parameter value within the UDF. It can not change the parameter value. Am I wrong?

AlexanderZ · April 15, 2021, 03:20

you may try to use

Code:

RP_Set_Real("name",value)

also there is a macro called DEFINE_OUTPUT_PARAMETER
which I've never used actually

April 14, 2021, 12:44	Linking UDF and workbench parameter	#1
saeedakhavan New Member saeed akhavan Join Date: Aug 2016 Posts: 4 Rep Power: 10	Hi. I need to calculate some variables in an UDF and pass these variables to workbench parameters (i.e., updating parameters by UDF) for optimization purposes. Any suggestions?

April 15, 2021, 02:19		#2
AlexanderZ Senior Member Alexander Join Date: Apr 2013 Posts: 2,363 Rep Power: 34	you may get input parameter in UDF using macro Code: RP_Get_Input_Parameter("variablename") more information in Ansys Fluent Customization manual __________________ best regards ****************************** press LIKE if this message was helpful

April 15, 2021, 03:20		#4
AlexanderZ Senior Member Alexander Join Date: Apr 2013 Posts: 2,363 Rep Power: 34	you may try to use Code: RP_Set_Real("name",value) also there is a macro called DEFINE_OUTPUT_PARAMETER which I've never used actually saeedakhavan likes this. __________________ best regards ****************************** press LIKE if this message was helpful

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April 15, 2021, 02:25		#3
saeedakhavan New Member saeed akhavan Join Date: Aug 2016 Posts: 4 Rep Power: 10	Thank you for your response Alexander. I suppose RP_Get_Input_Parameter() just reads the workbench parameter value within the UDF. It can not change the parameter value. Am I wrong?