acoustic noise minimization

aliemadi · October 29, 2013, 13:22

Hi
I have a source of noise generation (Internal combustion engine) which is in a closed space, like a box. this box place in a larger space like a room.I have the noise characteristics of ICE,I mean SPL just beside it. I want to know the sound level and its intensity at any point in the room. also I want to predict which part of box or room is more suitable to be covered by sound insulator (or absorber) to minimize annoying noise?
what a strategy do you suggest? CFD, Special software designed for this porous or writing a code using empirical correlations?

Thanks to all
Ali

ghorrocks · October 29, 2013, 18:27

The noise levels in the room is best done in an acoustics software like sysnoise.

The effects of sound deadening materials on the engine would probably be best done in some combination of a forced vibration FEA model and acoustics software.

October 29, 2013, 13:22	acoustic noise minimization	#1
aliemadi New Member Ali Emadi Join Date: Jan 2011 Posts: 18 Rep Power: 15	Hi I have a source of noise generation (Internal combustion engine) which is in a closed space, like a box. this box place in a larger space like a room.I have the noise characteristics of ICE,I mean SPL just beside it. I want to know the sound level and its intensity at any point in the room. also I want to predict which part of box or room is more suitable to be covered by sound insulator (or absorber) to minimize annoying noise? what a strategy do you suggest? CFD, Special software designed for this porous or writing a code using empirical correlations? Thanks to all Ali

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October 29, 2013, 18:27		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,871 Rep Power: 144	The noise levels in the room is best done in an acoustics software like sysnoise. The effects of sound deadening materials on the engine would probably be best done in some combination of a forced vibration FEA model and acoustics software.