Abstract
Acoustic invisibility of a cloaking system in turbulent fluids is poorly understood. Here we show that evident scattering would appear in turbulent wakes due to the submergence of a classical cloaking device. The inherent physical mechanism is explained using our theoretical model, which eventually inspires us to develop an optimised cloaking approach. Both the near- and far-field scattered fields are examined using computational methods. The remarkably low scattering demonstrates the effectiveness of the proposed approach, in particular for acoustic cloaking in turbulent fluids. © 2014 Cambridge University Press.
| Original language | English |
|---|---|
| Pages (from-to) | 460-477 |
| Number of pages | 18 |
| Journal | J. Fluid Mech. |
| Volume | 749 |
| DOIs | |
| Publication status | Published - 2014 |
Keywords
- Acoustics
- Aeroacoustics
- Invisibility cloaks
- Far field
- Physical mechanism
- Scattered field
- Theoretical modeling
- Turbulent fluids
- Turbulent wake
- Waves in random media
- fluid mechanics
- mathematical analysis
- numerical model
- optimization
- theoretical study
- turbulent flow
- wave field
- Acoustic wave scattering
- acoustics
- aeroacoustics
- waves in random media