نتایج جستجو برای: wave height
تعداد نتایج: 314424 فیلتر نتایج به سال:
Estuaries and bays are areas with a wide range of hydrodynamic and morphological phenomena. The existence of this diversity in environmental processes will lead to complex and sometimes unknown interactions in their structure. Understanding the behavior and environmental conditions of these beaches will improve the attitude of coastal users for better management of these areas. Many classificat...
The predominant principle included in the design of reshaping berm breakwaters is the supply of a wide berm at or nearby the water level with less armor stone size than that used in conventional design, which are allowed to reshape until an equilibrium slope is attained. In the present study, the recession of the berm due to wave and structure parameters has been investigated based on two dimen...
A general purpose viscous flow solver Ansys CFX was used to solve the unsteady three-dimensional (3D) Reynolds Averaged Navier-Stokes Equation (RANSE) for simulating a 3D numerical viscous wave tank. A flap-type wave generator was incorporated in the computational domain to generate the desired incident waves. Authors have made effort to study the physical behaviors of Flap type wave maker with...
The study of wave and its propagation on the water surface is among significant phenomena in designing quay, marine and water structures. Therefore, in order to design structures which are exposed to direct wave forces, it is necessary to study and simulate water surface height and the wave forces on the structures body in different boundary conditions. In this study, the propagation of static ...
wave prediction is useful for safety and effective management of vessel navigation or construction of offshore structures. since human activity mainly takes place in nearshore regions, accurate wave prediction is necessary there. however, nearshore waves are not easy to predict compared with ocean waves, because not only the waves but also the wind, which is the energy source of the waves, chan...
In this study two breakwater models with different conditions of bed, waves and water level are employed to analyze the toe stability and scour depth. The tests are conducted with regular waves. It is found that the scour depth in front of the rubble-mound breakwater depends on wave height, structure slope, water level and wave period, but the results reveal the effect of wave period toe is mor...
I survey the first twenty-five years of economic change in the former communist countries after the fall of the Berlin Wall. While diverging sharply from one another, these countries have converged economically and politically towards their nearest neighbors outside the Soviet bloc. The typical country experienced a spurt of economic reform in the early 1990s, slowing dramatically from around 1...
Some investigations were made on the wave height and wave period of wind waves and swells, based on the data of .continuous observation of ocean waves with a self-registering wave gauge at Jogashima Island, Kanagawa Prefecture, Japan, duriug a year from September, 1951 to August, 1952, and the characteristics of variations of wave height and wave period and their relations to meteorological con...
The design of a ${W}$ -band traveling-wave tube (TWT) power amplifier based on groove gap waveguide (GW) slow-wave circuit is presented in this article. technology GW analyzed to aid the electromagnetic band gap-based structures (SWSs...
This study presents wave height distribution in terms of stem wave evolution phenomena on partially perforated wall structures through three-dimensional laboratory experiments. The plain and partially perforated walls were tested to understand their effects on the stem wave evolution under the monochromatic and random wave cases with the various wave conditions, incident angle (from 10 to 40 de...
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