Understanding of wave hydrodynamics and its effects are important for engineers and scientists. Important insights may be gained from laboratory studies.  Often the waves are simulated in laboratory flumes do not have the full characteristics of real sea waves. It is then necessary to present reliable methods of wave generation in wave flumes.  In this paper, the results of numerically simulate...

Abstract Recent experiments demonstrate strongly directional coupling of light into waveguide modes. Here, the symmetry mechanisms behind this effect are studied, and it is shown that analysis symmetries symmetry‐breakings emitter‐waveguide system allows to qualitatively understand in several situations. The authors consider emitters either centered a median plane waveguide, or displaced from i...

C60 has been the focus of many studies since its discovery, but mechanical properties this unique molecule remain poorly known. To remedy that, we performed density functional theory molecular dynamics calculations compression at finite temperature, within a large strain range. The possible recovery after unloading was also investigated with first principles accuracy, for two different modes. W...

The bulk states of Hermitian systems are believed insensitive to local impurities or perturbations except for a few impurity-induced bound states. Thus, it is important ask whether \textit{local} non-Hermiticity can cause drastic changes the original systems. Here we address this issue affirmatively and present exact solutions double chain model with non-Hermitian terms possessing parity-time (...

This paper is concerned with the effect of pure shear on the reflection from a plane boundary of infinitesimal plane waves propagating in a half-space of incompressible isotropic elastic material. For a special class of constitutive laws it is shown that an incident plane harmonic wave propagating in the considered plane gives rise to a surface wave in addition to a reflected wave (with angle o...

the iranian “new wave” filmmakers started to pay attention to social changes during the pahlavi regime. imperial pahlavi successfully suppressed his political oppositions in decade of 1332-1342 (hijri shamsi) and spread a social reform during the following decades in 40’s to 50’s. the iranian cinematic movement that was called new wave by some persian film critics because of its similarly to th...

The governing equations of a transversely isotropic dissipative medium are solved analytically to obtain the surface wave solutions. The appropriate solutions satisfy the required boundary conditions at the stress-free surface to obtain the frequency equation of Rayleigh wave. The numerical values of the non-dimensional speed of Rayleigh wave speed are computed for different values of frequency...

‎The water wave generation by wave paddle and a freely falling rigid body are examined by using an Incompressible Smoothed Particle Hydrodynamics (ISPH)‎. ‎In the current ISPH method‎, ‎the pressure was evaluated by solving pressure Poisson equation using a semi-implicit algorithm based on the projection scheme and the source term of pressure Poisson equation contains both of divergence free ve...