Acoustic and Elastic Wave Scattering from a Rigid or Soft Cylinder
نویسنده
چکیده
Classical acoustic and elastic wave scattering problems from an acoustically rigid or soft cylinder are revisited. The behavior of phases as well as magnitudes of each partial waves and form functions are numerically analyzed and discussed. The effect of mode conversion, especially, on the phases of each partial waves in elastic wave scattering is identified.
منابع مشابه
Error in Finding Direction of Arrival Using a Linear Array Due to Scattering from an Elastic Cylinder
Sonar domes, with stiffeners, house acoustic transducer arrays that are used to determine the direction of arrival of nearly plane acoustic waves generated by distant sources. Scattering of the waves, by the stiffener, disturbs the pressure field and causes a difference between the actual and measured directions of arrival. The errors, when using energy and split beam correlation methods, in fi...
متن کاملImprovements to the Mathematical Model of Acoustic Wave Scattering from Transversely Isotropic Cylinders
This paper considers the scattering of an in nite plane acoustic wave from a long immersed, solid, transversely isotropic cylinder. The mathematical model which has already been developed for this problem does not work in the case of a normally incident wave. Modi cations to the mathematical model are proposed in order to make it applicable to all incidence angles, including = 0. Numerical resu...
متن کاملScattering by Penetrable Acoustic Targets
An acoustic target of constant density pt and variable index of refraction is imbedded in a surrounding acoustic fluid of constant density pa. A time harmonic wave propagating in the surrounding fluid is incident on the target. We consider two limiting cases of the target where the parameter e = pa/p, + 0 (the nearly rigid target) or E + ~0 (the nearly soft target). When the frequency of the in...
متن کاملScattering of a plane acoustic wave from a transversely isotropic cylinder encased in a solid elastic medium
A mathematical model is developed to describe the scattering of a plane wave incident at an arbitrary angle on a transversely isotropic cylinder embedded in a solid elastic matrix. The model is based on the normal-mode expansion method, but is complicated by the coupling between the potential functions representing compressional and axially polarized shear waves. The solid matrix around the cyl...
متن کاملAcoustic Scattering From a Fluid-elastic-solid Interface Using the Small Slope Approximation
In this paper the small slope approximation is applied to acoustic scattering from a randomly rough fluid-elastic-solid interface. Expressions for the zeroth-, first-, and second-order bistatic scattering cross sections are derived. Numerical results are obtained for the zeroth-order small slope approximation for Gaussian and modified power law surface roughness pectra and are compared with tho...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1997