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Lévy stable distribution and [0,2] power law dependence of acoustic absorption on frequency in various lossy media
Lévy stable distribution [0,2] power law dependence acoustic absorption various lossy media
2010/10/22
Absorption of acoustic wave propagation in a large variety of lossy media is characterized by an empirical power law function of frequency, 0j!jy. It has long been noted that the exponent y ranges fr...
A Frequency Decomposition Time Domain Model of Broadband Frequency-Dependent Absorption
frequency decomposition bandpass Gauss filter broadband ultrasound frequency-dependent attenuation time domain
2010/10/22
This study aims to extend the time-domain model for the frequency-dependent attenuation of a single frequency excitation to a broadband excitation via a finite frequency decomposition. Our model satis...
Local boundary conditions with a high-resolution numerical scheme for non-oscillatory shock absorption and reflection
boundary conditions shock capturing high resolution schemes
2010/3/12
In this work we examine some simple non-oscillatory boundary conditions that can be applied to a typical class of modern ¯nite-di®erence shock capturing schemes. In particular we concentrate ...