Numerical Analysis of Long Range Sound Wave Propagation in Ocean by Wave Equation Finite Difference Time Domain Method with Graphics Processing Unit

2012 ◽  
Vol 51 ◽  
pp. 07GG07 ◽  
Author(s):  
Shigeyoshi Nakai ◽  
Takuto Ishii ◽  
Takao Tsuchiya
Keyword(s):  
Wave Propagation ◽  
Wave Equation ◽  
Numerical Analysis ◽  
Finite Difference ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Graphics Processing Unit ◽  
Processing Unit ◽  
Graphics Processing ◽  
Difference Time

scholarly journals Acceleration of split-field finite difference time-domain method for anisotropic media by means of graphics processing unit computing

2013 ◽  
Vol 53 (1) ◽  
pp. 011005 ◽  
Author(s):  
Jorge Francés ◽  
Sergio Bleda ◽  
Mariela Lázara Álvarez ◽  
Francisco Javier Martínez ◽  
Andres Márquez ◽  
...  
Keyword(s):  
Finite Difference ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Graphics Processing Unit ◽  
Anisotropic Media ◽  
Time Domain Method ◽  
Processing Unit ◽  
Split Field ◽  
Graphics Processing ◽  
Difference Time

Systematic wave-equation finite difference time domain formulations for modeling electromagnetic wave-propagation in general linear and nonlinear dispersive materials

2015 ◽  
Vol 26 (04) ◽  
pp. 1550046 ◽  
Author(s):  
Omar Ramadan
Keyword(s):  
Wave Propagation ◽  
Wave Equation ◽  
Electromagnetic Wave ◽  
Finite Difference ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Electromagnetic Wave Propagation ◽  
Complex Conjugate ◽  
Linear And Nonlinear ◽  
Difference Time

In this paper, systematic wave-equation finite difference time domain (WE-FDTD) formulations are presented for modeling electromagnetic wave-propagation in linear and nonlinear dispersive materials. In the proposed formulations, the complex conjugate pole residue (CCPR) pairs model is adopted in deriving a unified dispersive WE-FDTD algorithm that allows modeling different dispersive materials, such as Debye, Drude and Lorentz, in the same manner with the minimal additional auxiliary variables. Moreover, the proposed formulations are incorporated with the wave-equation perfectly matched layer (WE-PML) to construct a material independent mesh truncating technique that can be used for modeling general frequency-dependent open region problems. Several numerical examples involving linear and nonlinear dispersive materials are included to show the validity of the proposed formulations.

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