Acoustic propagation in uncertain waveguides with spatially varying wave speeds

2007 ◽  
Vol 121 (5) ◽  
pp. 3076-3076
Author(s):  
John Burkhardt
Author(s):  
C. Marangos ◽  
R. Porter

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.


2018 ◽  
Vol 143 (1) ◽  
pp. 237-247 ◽  
Author(s):  
Megan S. Ballard ◽  
R. Daniel Costley ◽  
Jason D. Sagers ◽  
Kevin M. Lee ◽  
Andrew R. McNeese ◽  
...  

1982 ◽  
Vol 43 (C9) ◽  
pp. C9-509-C9-511
Author(s):  
P. Doussineau ◽  
W. Schön

2016 ◽  
Vol 64 (3) ◽  
pp. 314-323
Author(s):  
Frank Mobley ◽  
Tiffanie Moore ◽  
Matthew Davis

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