Waves with negative group velocity in cylindrical shell filled with liquid
نویسندگان
چکیده
منابع مشابه
Backward waves with double zero-group-velocity points in a liquid-filled pipe.
Hollow cylinders often exhibit backward propagation modes whose group and phase velocities have opposite directions, and these exhibit a minimum possible frequency at which the group velocity vanishes at a nonzero wavenumber. These zero-group-velocity (ZGV) points are associated with resonant conditions in the medium. On the basis of ZGV resonances, a non-contact and laser ultrasound technique ...
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چکیده ندارد.
Nonlinear waves with negative phase velocity.
Recently, waves propagating with negative phase velocity [simply called antiwaves (AWs)] have attracted great attention in the area of nonlinear oscillatory systems. In the present work we investigate the parameter conditions for AWs. So far AWs have been revealed from systems slightly beyond Hopf bifurcation or some other instabilities, and from some wave sources with certain restricted freque...
متن کاملAnalysis of Spectral Characteristics of Sound Waves Scattered from a Cracked Cylindrical Elastic Shell Filled with a Viscous Fluid
The scattering of plane steady-state sound waves from a viscous fluid-filled thin cylindrical shell weakened by a long linear slit and submerged in an ideal fluid is studied. For the description of vibrations of elastic objects the Kirchhoff–Love shell-theory approximation is used. An exact solution of this problem is obtained in the form of series with cylindrical harmonics. The numerical anal...
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ژورنال
عنوان ژورنال: Computational Continuum Mechanics
سال: 2018
ISSN: 1999-6691
DOI: 10.7242/1999-6691/2018.11.2.13