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Methodology for studying the numerical speed of sound in finite differences schemes
Spa Carvajal, Carlos; Mateos, Toni; Garriga, Adan
The space and time discretization inherent to all FDTD schemesintroduce non-physical dispersion errors, i.e. deviations ofthe speed of sound from the theoretical value predicted bythe governing Euler differential equations. A generalmethodologyfor computing this dispersion error via straightforwardnumerical simulations of the FDTD schemes is presented.The method is shown to provide remarkable accuraciesof the order of 1/1000 in a wide variety of twodimensionalfinite difference schemes.
So -- Informàtica
(c) S. Hirzel Verlag (SHV)
S. Hirzel Verlag (SHV)

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