Define reference frame motion by an UDF Fluent

aaron_delangel · September 9, 2019, 12:55

Dear friends;

Currently, we would like to set a reference frame velocity BUT we don't want to set a constant velocity, we need to update the velocity by a VALUE calculated through an User Define Function (UDF), which is converging during the simulation.

Does anyone know how to modify the reference frame velocity so I can use variable/changing velocity that is in my UDF?

Thanks.

S_Tanuj · January 12, 2020, 07:36

You will have to create UDF and have to update that in cell zone boundary condition's zone or mesh motion. There you will find option for UDF.
Cheers

AlexanderZ · January 12, 2020, 18:48

ansys fluent customization manual -> mesh motion
find information, how to hook up your UDF

September 9, 2019, 12:55	Define reference frame motion by an UDF Fluent	#1
aaron_delangel New Member aaron del angel arroyo Join Date: Sep 2019 Location: Mexico Posts: 2 Rep Power: 0	Dear friends; Currently, we would like to set a reference frame velocity BUT we don't want to set a constant velocity, we need to update the velocity by a VALUE calculated through an User Define Function (UDF), which is converging during the simulation. Does anyone know how to modify the reference frame velocity so I can use variable/changing velocity that is in my UDF? Thanks.

January 12, 2020, 07:36		#2
S_Tanuj New Member Tanuj Srivastava Join Date: Mar 2019 Posts: 15 Rep Power: 7	You will have to create UDF and have to update that in cell zone boundary condition's zone or mesh motion. There you will find option for UDF. Cheers aaron_delangel likes this.

January 12, 2020, 18:48		#3
AlexanderZ Senior Member Alexander Join Date: Apr 2013 Posts: 2,363 Rep Power: 34	ansys fluent customization manual -> mesh motion find information, how to hook up your UDF aaron_delangel likes this. __________________ best regards ****************************** press LIKE if this message was helpful

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