PRESSURE FLUCTUATION for Aerodynamic Noise???

fender26 · October 23, 2013, 02:58

Hi,
I am trying to simulate aerodynamic noise generating from flow around a cavity. I have a mesh of size 16 million and I am using DES. I read in the Ansys reference guide that to calculate SPL i need Pressure fluctuation in the field. The problem lies here, can anyone please tell me how can I get pressure fluctuations. Do I have to define it in CFX pre, I tried finding it in Extra variable list, but could not find it

.

Thanks

ghorrocks · October 23, 2013, 08:08

The documentation describes how to do this - CFX Modelling guide/Aerodynamic Noise Analysis/Noise Strength Estimation in CFX, and then under the type of noise source you have.

October 23, 2013, 02:58	PRESSURE FLUCTUATION for Aerodynamic Noise???	#1
fender26 New Member Join Date: Sep 2013 Posts: 9 Rep Power: 13	Hi, I am trying to simulate aerodynamic noise generating from flow around a cavity. I have a mesh of size 16 million and I am using DES. I read in the Ansys reference guide that to calculate SPL i need Pressure fluctuation in the field. The problem lies here, can anyone please tell me how can I get pressure fluctuations. Do I have to define it in CFX pre, I tried finding it in Extra variable list, but could not find it . Thanks

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October 23, 2013, 08:08		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,870 Rep Power: 144	The documentation describes how to do this - CFX Modelling guide/Aerodynamic Noise Analysis/Noise Strength Estimation in CFX, and then under the type of noise source you have.