I am a final year university student and for my honours project I am studying the effects of the size of air-filled cavities in an anechoic layer. The layer is made of silicone and has a steel plate backing. It is surrounded by a water enclosure, the surfaces in the x and y planes of the anechoic layer have a frictionless support applied to them to stop displacement in the normal directions. I am however having trouble with the remainder of the boundary conditions, namely the mesh sizing and whether I have to use commands to apply specific nodal values (using FLUID 30?).
Any help would be greatly appreciated. Thank you.
Dear Dr Callum : Nowadays, research on underwater sound absorbing coatings is important on marine combats. Due to high cost of acoustic experimental tests, determination of an accurate simulation method for assessment of the coating characteristics is an important goal for scientists.
Article Numerical simulation of a viscoelastic sound absorbent coati...
Please take a look at the following useful links:
Article Coupled Structural-Acoustic Analysis Using ANSYS
https://www.researchgate.net/post/How-to-obtain-sound-absorption-coefficient-of-a-material-from-acoustic-pressure-in-an-impedance-tube-with-ANSYS
Regards--
Hi
The rule of thumb is seven nodes per wavelength for free wave propagation and nine nodes per wavelength for reactive fields.
By the sound of it, try to use nine close to the body and less dense away from it.
/C
- Badges
- Science topic