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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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# Surface impedance water layer in partially filled cavities

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