Acoustic propagation in uncertain waveguides with spatially varying wave speeds

2007 ◽  
Vol 121 (5) ◽  
pp. 3076-3076
Author(s):  
John Burkhardt
Keyword(s):  
Acoustic Propagation ◽  
Wave Speeds ◽  
Spatially Varying

scholarly journals Shallow water theory for structured bathymetry

2021 ◽  
Vol 477 (2254) ◽  
Author(s):  
C. Marangos ◽  
R. Porter
Keyword(s):  
Wave Propagation ◽  
Shallow Water ◽  
Shallow Water Theory ◽  
Scattering Problems ◽  
Water Wave Scattering ◽  
Wave Speeds ◽  
Surface Wave Propagation ◽  
Propagating Waves ◽  
Homogenization Approach ◽  
Spatially Varying

A shallow water theory is developed which applies to surface wave propagation over structured bathymetry comprising rapid abrupt fluctuations in depth between two smoothly varying levels. Using a homogenization approach coupled to the depth-averaging process which underpins shallow water modelling, governing equations for the wave elevation are derived which explicitly relate local spatially varying anisotropy of wave speeds to properties of the microstructured bed. The model is applied to two water wave scattering problems both to demonstrate the complex wave propagation characteristics exhibited by structured beds and to provide examples of how to use structured beds to engineer bespoke wave propagation. This includes propagating waves with practically zero reflection and loss of form through circular bends in channels.

A comparison between directly measured and inferred wave speeds from an acoustic propagation experiment in Currituck Sound

2018 ◽  
Vol 143 (1) ◽  
pp. 237-247 ◽  
Author(s):  
Megan S. Ballard ◽  
R. Daniel Costley ◽  
Jason D. Sagers ◽  
Kevin M. Lee ◽  
Andrew R. McNeese ◽  
...  
Keyword(s):  
Acoustic Propagation ◽  
Wave Speeds ◽  
Currituck Sound ◽  
Propagation Experiment

ACOUSTIC PROPAGATION IN AN EPOXY RESIN AT VERY LOW TEMPERATURES

1982 ◽  
Vol 43 (C9) ◽  
pp. C9-509-C9-511
Author(s):  
P. Doussineau ◽  
W. Schön
Keyword(s):  
Epoxy Resin ◽  
Low Temperatures ◽  
Acoustic Propagation

Simplification of real-world terrain for outdoor acoustic propagation modeling

2016 ◽  
Vol 64 (3) ◽  
pp. 314-323
Author(s):  
Frank Mobley ◽  
Tiffanie Moore ◽  
Matthew Davis
Keyword(s):  
Real World ◽  
Acoustic Propagation ◽  
Propagation Modeling
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