Periodic boundaries and FW-H

clarice · July 5, 2018, 05:40

I want to model an axial fan using LES, with the goal of predicting sound using the Ffowcs-Williams Hawkings acoustic model. To save time, I am considering modeling only one blade and applying periodic boundary conditions, but I am unsure whether Fluent's FW-H model is "aware" of acoustic sources outside the computational domain (those implied by periodicity), or if it only considers sources in the domain. Help would be much appreciated!

LuckyTran · July 5, 2018, 12:56

Yes it works. You only need to convince yourself.

July 5, 2018, 05:40	Periodic boundaries and FW-H	#1
clarice New Member Clarice du Plessis Join Date: Aug 2017 Location: Stellenbosch University Posts: 9 Rep Power: 9	I want to model an axial fan using LES, with the goal of predicting sound using the Ffowcs-Williams Hawkings acoustic model. To save time, I am considering modeling only one blade and applying periodic boundary conditions, but I am unsure whether Fluent's FW-H model is "aware" of acoustic sources outside the computational domain (those implied by periodicity), or if it only considers sources in the domain. Help would be much appreciated!

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July 5, 2018, 12:56		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,787 Rep Power: 66	Yes it works. You only need to convince yourself.