Surface impedance water layer in partially filled cavities

AI Thread Summary
The discussion centers on modeling the acoustic field in partially filled cavities with water, specifically using surface impedance as a boundary condition. The main inquiry is about standard models for the surface impedance of water and how to effectively represent it as a sound-absorbing wall. Some participants suggest that water may act more like a perfect reflector than an absorber, raising questions about the significance of its absorbent properties. The conversation explores alternative approaches to modeling the water layer's acoustic characteristics. Overall, the focus is on finding accurate methods for representing water's surface impedance in acoustic modeling.
Ilias Aouaj
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Hello guys!

I have to model the acouctic field within partially filled cavities.

So consider a rectangular or cylindrical cavity that is partially filled with water. I would like to model the water layer as a sound absorbing wall by prescribing it as a surface impedance boundary condition.

My problem is modelling the surface impedance of water. Are there any standard surface impedance models for fluids like water? Or how should I model the surface impedance for water?

I'm also open for any other suggestions in approaching the water layer as a sound absorbing wall.

Thanks for your answers!
 
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Ilias Aouaj said:
Hello guys!

I have to model the acouctic field within partially filled cavities.

So consider a rectangular or cylindrical cavity that is partially filled with water. I would like to model the water layer as a sound absorbing wall by prescribing it as a surface impedance boundary condition.

My problem is modelling the surface impedance of water. Are there any standard surface impedance models for fluids like water? Or how should I model the surface impedance for water?

I'm also open for any other suggestions in approaching the water layer as a sound absorbing wall.

Thanks for your answers!
I would guess that the water is intended to be a perfect reflector and not an absorber.
 
tech99 said:
I would guess that the water is intended to be a perfect reflector and not an absorber.
Do you think the absorbence is small to neglect?
 

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