Finite element modeling of reverberation and transmission loss in shallow water waveguides with rough boundaries

2011 ◽  
Vol 129 (3) ◽  
pp. 1273-1279 ◽  
Author(s):  
Marcia J. Isakson ◽  
Nicholas P. Chotiros
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Shallow Water ◽  
Transmission Loss ◽  
Element Modeling ◽  
Rough Boundaries

scholarly journals Study of the Hershel-Quinke Resonator

2020 ◽  
Vol 320 ◽  
pp. 00025
Author(s):  
Veronika Nikolaeva ◽  
Alexandr Komkin
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Analytical Model ◽  
Transmission Loss ◽  
Geometric Parameters ◽  
Numerical Calculations ◽  
Element Modeling

In this paper, the transmission loss of a Herschel-Quincke resonator is investigated. An analytical model of such a resonator is considered. The finite element modeling of the resonator has also been carried out. It is shown that the resonance peaks of the transmission loss spectrum in the analytical model are shifted relative to the results of numerical calculations, as a result of which it is necessary to introduce corrections for the length of the resonator tubes into the analytical model. The amendments made it possible to correct the results of analytical calculations, ensuring their reliability. The dependence of the resonator bandwidth as a function of its geometric parameters is investigated.

Finite-Element Modeling of Acoustic Scattering from Objects in Shallow Water

2007 ◽  
Author(s):  
David S. Burnett ◽  
Kwang H. Lee ◽  
Gary S. Sammelmann
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Shallow Water ◽  
Acoustic Scattering ◽  
Element Modeling

Exact First Order Finite Element Modeling for Eddy Current NDE

1991 ◽  
Vol 3 (1) ◽  
pp. 235-253 ◽  
Author(s):  
L. D. Philipp ◽  
Q. H. Nguyen ◽  
D. D. Derkacht ◽  
D. J. Lynch ◽  
A. Mahmood
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Eddy Current ◽  
Element Modeling ◽  
First Order ◽  
Eddy Current Nde
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