Acoustic propagation from a helicoidal wavefront source in an ocean environment

2016 ◽  
Vol 139 (4) ◽  
pp. 2072-2072
Author(s):  
Brian T. Hefner
Keyword(s):  
Acoustic Propagation ◽  
Ocean Environment

Flow-dependent modeling of acoustic propagation based on DG-FEM method

2021 ◽  
Author(s):  
Zichen Wang ◽  
Jian Xu ◽  
Xuefeng Zhang ◽  
Can Lu ◽  
Kangkang Jin ◽  
...  
Keyword(s):  
Sound Propagation ◽  
Transmission Loss ◽  
Acoustic Propagation ◽  
Water Area ◽  
Current Speed ◽  
Propagation Model ◽  
Propagation Loss ◽  
Two Dimensional ◽  
Underwater Sound ◽  
Ocean Environment

AbstractThis paper proposes a two-dimensional underwater sound propagation model using the Discontinuous Galerkin Finite Element Method (DG-FEM) to investigate the influence of current on sound propagation. The acoustic field is calculated by the convected wave equation with the current speed parameter. Based on the current speed data from an assimilation model, a two-dimensional coupled acoustic propagation model in the Fram Strait water area is established to observe the variability in propagation loss under different seasonal velocities in the real ocean environment. The transmission loss and signal time structure are examined. The results obtained in different source frequencies are also compared. It appears that the current velocity, time and range variation all have an effect on underwater sound propagation.

scholarly journals Time-evolving acoustic propagation modeling in a complex ocean environment

2013 ◽  
Author(s):  
M. E. G. D. Colin ◽  
T. F. Duda ◽  
L. A. te Raa ◽  
T. van Zon ◽  
P. J. Haley ◽  
...  
Keyword(s):  
Acoustic Propagation ◽  
Propagation Modeling ◽  
Ocean Environment

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

THE SINGLE EFFECT OF MICROBE ON THE CORRO-SION BEHAVIORS OF 45 STEEL IN SEAWATER OF TROPICAL OCEAN ENVIRONMENT

2010 ◽  
Vol 2010 (1) ◽  
pp. 118-122 ◽  
Author(s):  
Jinyi WU ◽  
Weilong XIAO ◽  
Ke CHAI ◽  
Yuhui YANG
Keyword(s):  
Tropical Ocean ◽  
Single Effect ◽  
Ocean Environment
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