Acoustic impedance water surface in partially filled tank

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SUMMARY

The discussion centers on determining the acoustic impedance of a water surface in a partially filled tank, specifically using the Helmholtz equation. The boundary condition presented is \(\frac{∂p}{∂\vec{n}} = -j\rho_0\omega\frac{p}{Z}\), where \(Z\) represents the impedance of the water surface. Participants seek clarification on whether the impedance discussed refers to the specific impedance of water or the impedance at the water surface. Models for calculating this impedance were also requested.

PREREQUISITES
  • Understanding of the Helmholtz equation in acoustics
  • Knowledge of acoustic impedance and its mathematical representation
  • Familiarity with boundary conditions in fluid dynamics
  • Basic principles of wave propagation in fluids
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  • Research acoustic impedance models for fluid interfaces
  • Study the Helmholtz equation applications in acoustics
  • Explore boundary condition formulations in fluid mechanics
  • Investigate the specific impedance of water and its implications in acoustic studies
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Acoustic engineers, fluid dynamics researchers, and students studying wave propagation in fluids will benefit from this discussion.

Ilias Aouaj
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Hello guys,

Consider a partially filled tank with water where the acoustic field can be described by the Helmholtz equation.

The boundary condition at the water surface would be \frac{∂p}{∂\vec{n}} = -j\rho_0\omega\frac{p}{Z}
where Z is the impedance of the water surface.

What would be the impedance of the water surface.? Are there any models i could use?

Thanks for your answers!
 
Engineering news on Phys.org
Are you sure is the impedance of water surface?
Isn't the specific impedance of water?
 

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