Interference of sound waves in a moving fluid

Abstract

We investigate sound propagation in a moving fluid confined in a randomly corrugated tube. For weak randomness and small fluid velocities $v^{(0)}$, the localization length $\xi$ shows extreme sensitivity to the variation of $v^{(0)}$. In the opposite limit of large fluid velocities, $\xi$ acquires a constant value which is independent of the frequency of the incident sound wave, the degree of randomness and $v^{(0)}$ itself. Finally, we find that the standard deviation ${\sigma }_{\ln T}$ of the logarithm of transmittance $\ln (T)$ is a universal function of the ensemble average $⟨\ln T⟩$, which is not affected by the fluid velocity.

References in corpus (2)

• Localization of ultrasound in a three-dimensional elastic network
• Cold atoms in the presence of disorder

Cited by in corpus (1)

• Half-period Aharonov-Bohm oscillations in disordered rotating optical ring cavities