Sound scattering at fluid-fluid rough surface |
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Authors: | YU GaoKun PENG LinHui |
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Institution: | Department of Physics, Ocean University of China, Qingdao 266100, China |
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Abstract: | Extinction theorem was used to deduce the first order scattering cross-section including the double scattering effects for
the fluid-fluid rough surface. If the double scattering effects are neglected in the present method, the scattering cross-section
agrees with the result obtained by the perturbation method based on Rayleigh hypothesis. Calculations of scattering strength
were carried out, and comparisons with the first-order perturbation method based on Rayleigh hypothesis were also done. The
results show that double scattering effects are obvious with the increase of the root mean square of surface height and the
grazing angle when the valid condition k
1
h < 1 is satisfied.
Supported by the National Basic Research Program of China (Grant No. 2005CB422307) |
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Keywords: | rough surface scattering cross-section Extinction theorem double scattering |
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