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Background on <strong>Acoustics</strong><br />
© 2011 ANSYS, Inc. November 22,<br />
2011<br />
Vibroacoustic problems can be solved by coupling<br />
the acoustic and structural equations together:<br />
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• The symmetric form <strong>of</strong> the harmonic FSI equations<br />
shown above is introduced in 14.0 for faster solution<br />
times. The fluid-structure coupling term is C fs. An<br />
unsymmetric form from prior releases is still available.<br />
• The sloshing term S q exists for free surfaces.<br />
• Since the equations are tightly coupled, the structural<br />
motions generate sound, and the acoustic waves can<br />
vibrate the structure.<br />
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