Dynamically changing boundary conditions

DamR · December 16, 2014, 01:33

Is there a way to set up a dynamic inlet boundary condition. Lets say I have a velocity inlet. A transient simulation runs for "x" secs with an initial velocity at inlet and then based on the response, I have to change the velocity at inlet for another "y" secs. Is it possible to do this? I want the change in velocity to add value to the previous simulation rather than start from scratch.

I would be using Matlab for the control system and will be juggling between the two (Fluent and Matlab) to get the final simulation.

Kokemoor · December 16, 2014, 10:35

Profiles (Fluent User's Guide 6.6.5) may do what you're looking for, depending on the interaction you need. If that's not powerful enough, you can write a DEFINE_PROFILE UDF.

December 16, 2014, 01:33	Dynamically changing boundary conditions	#1
DamR New Member Join Date: Oct 2014 Posts: 9 Rep Power: 11	Is there a way to set up a dynamic inlet boundary condition. Lets say I have a velocity inlet. A transient simulation runs for "x" secs with an initial velocity at inlet and then based on the response, I have to change the velocity at inlet for another "y" secs. Is it possible to do this? I want the change in velocity to add value to the previous simulation rather than start from scratch. I would be using Matlab for the control system and will be juggling between the two (Fluent and Matlab) to get the final simulation.

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December 16, 2014, 10:35		#2
Kokemoor Senior Member Andrew Kokemoor Join Date: Aug 2013 Posts: 122 Rep Power: 13	Profiles (Fluent User's Guide 6.6.5) may do what you're looking for, depending on the interaction you need. If that's not powerful enough, you can write a DEFINE_PROFILE UDF.