PAFEC-VibroAcoustics - Barrier analysis

Finite and boundary element techniques can be used to analyse barriers. It is relatively straightforward to predict results for 'ideal conditions'. However the effectiveness of the barrier will change with wind conditions, and variations in temperature in the surrounding air space will also be difficult to incorporate into the model. A boundary element approach could be used to compare between a number of different designs under 'ideal conditions', with the assumption that the best design might also be best in other circumstances.

Complex shape rigid barrier at low frequency

Distributed sound source on left.

The region on the right is shielded by a barrier.

At low frequency diffraction is an important effect.

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