نتایج جستجو برای: plane wave

تعداد نتایج: 326855  

Journal: :نشریه دانشکده فنی 0
همایون عریضی نرگس نوری

with the rapid growth of indoor wireless communication systems, the need to accurately model radio wave propagation inside the building environments has increased. many site-specific methods have been proposed for modeling indoor radio channels. among these methods, the ray tracing algorithm and the finite-difference time domain (fdtd) method are the most popular ones. the ray tracing approach ...

Journal: :Coastal Engineering Proceedings 2011

Journal: :Progress of Theoretical Physics 1977

R.R Gupta, R.R. Gupta

The present paper concerns with the effect of initial stress on the propagation of plane waves in a rotating transversely isotropic medium in the context of thermoelasticity theory of GN theory of type-II and III. After solving the governing equations, three waves propagating in the medium are obtained. The fastest among them is a quasi-longitudinal wave. The slowest of them is a thermal wave. ...

ژورنال: مهندسی دریا 2014

A numerical model has been introduced to simulate wave interaction with oscillating water column (OWC) in two dimensional vertical plane. Two-dimensional Navier-stokes equations have been used. To track free surface, Volume of fluid method has been employed. Also a porous wall is situated at the beginning of the canal to absorb the reflected waves. It’s valuable to mention that the Poisson equa...

Journal: :Journal of Computational and Applied Mathematics 1991

2002
Sergey Fomel

Plane-wave destruction filters originate from a local plane-wave model for characterizing seismic data. These filters can be thought of as a T -X analog of F -X prediction-error filters and as an alternative to T -X prediction-error filters. The filters are constructed with the help of an implicit finite-difference scheme for the local plane-wave equation. On several synthetic and real-data exa...

2002
Sergey Fomel

Plane-wave destruction filters originate from a local plane-wave model for characterizing seismic data. These filters can be thought of as a time–distance (T -X) analog of frequency-distance (F-X) prediction-error filters and as an alternative to T -X prediction-error filters. The filters are constructed with the help of an implicit finitedifference scheme for the local plane-wave equation. Sev...

In this paper, on the basis of a new strain gradient elasticity theory, wave propagation in rectangular nanoplates by considering in-plane magnetic field is studied. This strain gradient theory has two gradient parameters and has the ability to compare with the nonlocal elasticity theory. From the best knowledge of author, it is the first time that this theory is used for investigating wave pro...

P Sharma R Kumar,

In this paper the propagation of harmonic plane waves in a homogeneous anisotropic magneto-piezothermoelastic diffusive body with fractional order derivative is studied. The governing equations for a homogeneous transversely isotropic body in the context of the theory of thermoelasticity with diffusion given by Sherief et al. [1] are considered as a special case. It is found that three types of...

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