The development of coastal regions combined with rising sea levels is leading to an increasing risk flooding caused by wave overtopping natural beaches and engineered structures. Previous measurements have been obtained for static structures using fixed current meters depth sensors or tanks. These are unsuitable dynamically stable protection however, because the geometry these expected evolve u...

Non destructive testing techniques based on the application of dynamic loads on the surface of a soil deposit or a pavement system, and the measurement of the resulting deflection basins or the phase difference between the motions recorded at various receivers have become powerful tools in civil engineering. In many cases, however, the interpretation of the recorded data relies on static analys...

in this study a nonlinear asymmetric instability analysis carried out to study primary atomization of annular liquid sheets emanating from the prefilming airblast atomizer using a perturbation method and potential flow assumption. in this direction, firstly governing equations derived according to potential flow assumption and conservation equations while dynamic and static boundary condition a...

in this paper the telemac-3d model has been hired to simulate and study the high waves’ interaction with coastal structures. therefore a special arrangement of telemac-3d has been prepared in this study to simulate wave generation, coastal processes, wave set-up and overtopping over coastal structures. experimental data has been used to verify this arrangement of the model. thereafter, the mode...

There is a huge energy demand from offshore renewable resources. To maximize the use of various sources, combined floating system consisting different types devices an ideal option to reduce levelized cost (LCOE) by sharing infrastructure platform and enhancing power production capacity. This study proposed concept systems combing heave-type wave converter (WEC) with semisubmersible wind turbin...

Response of soil depends on both the mechanical properties of soil itself and the nature of loading. Many geotechnical engineering problems are associated with dynamic and cyclic loadings, such as ocean wave or ice loading applied on foundations of offshore structures or bridges, dynamic loading applied on foundations of offshore wind power structures, ocean wave loading on harbor structures, s...

The quasi 2-day wave is known as a strong dynamic perturbation occurring usually after solstice in the middle and upper atmosphere. The excitation mechanism of this transient wave is discussed for years but no clear answe] has been altained. In this paper, propagating characteristics of the 2-day wave are studied based on 8-month temperature measurements from the Microwave Limb Sounde~ (MLS) on...

shear wave velocity is a basic engineering tool required to define dynamic properties of soils. in many instances it may be preferable to determine vs indirectly by common in-situ tests, such as the standard penetration test. many empirical correlations based on the standard penetration test are broadly classified as regression techniques. however, no rigorous procedure has been published for c...

This paper discusses numerical experiments of wave front propagation on a flat disk and related results. In particular, notions of extremal rays and wave front caustics are introduced to investigate the dynamic behaviors of wave fronts under repeated reflection. These results are related to earlier work on caustics of ray systems. It is shown that wave fronts require a modified notion of causti...