selective frequency damping in SU2

Sigi · November 6, 2024, 15:16

Hi,

Is there any way to apply the selective frequency damping (SFD) technique in SU2?

I am wondering if someone has already implemented this.

Thanks.

bigfootedrockmidget · November 7, 2024, 04:55

I do not think this was ever implemented in SU2. But it might be very beneficial to have it, especially in combination with the multigrid method for convergence acceleration.

What I understand is that after solving for the flow variables q in (pseudo-)time using implicit Euler, you have to solve a second system that solves the filtered flow variables (q, q_f). This does not sound too intrusive. If you would like to implement something like this, please go ahead!

Link to some research:
https://research.tudelft.nl/files/46..._etal_2018.pdf

November 6, 2024, 15:16	selective frequency damping in SU2	#1
Sigi New Member Join Date: Jan 2023 Posts: 12 Rep Power: 3	Hi, Is there any way to apply the selective frequency damping (SFD) technique in SU2? I am wondering if someone has already implemented this. Thanks.

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November 7, 2024, 04:55		#2
bigfootedrockmidget Senior Member bigfoot Join Date: Dec 2011 Location: Netherlands Posts: 649 Rep Power: 19	I do not think this was ever implemented in SU2. But it might be very beneficial to have it, especially in combination with the multigrid method for convergence acceleration. What I understand is that after solving for the flow variables q in (pseudo-)time using implicit Euler, you have to solve a second system that solves the filtered flow variables (q, q_f). This does not sound too intrusive. If you would like to implement something like this, please go ahead! Link to some research: https://research.tudelft.nl/files/46..._etal_2018.pdf