نتایج جستجو برای: breakwater

تعداد نتایج: 1176  

ژورنال: مهندسی دریا 2010
آق تومان, پیمان, حسین زاده, هادی, وفایی, فریدون,

In the present paper optimum height of skirt of Skirt Pontoon Floating Breakwater are reported by physical model. 54 tests on 3 types (skirt heights : 8,16 and 24 cm) of skirt pontoon floating breakwater is conducted in the wave flume of Soil Conservative and Watershed Research Center. Hydrodynamical and geometrical parameters were analysised. In this research optimum height of skirt to water d...

ژورنال: مهندسی دریا 2016

Wave overtopping on the breakwaters is an important issue in breakwaters’ design. Most of the previous studies focused on experimental researches and numerical modeling of irregular wave overtopping particularly on porous breakwaters has not been studied. In the present study, the verification between experimental studies and numerical modeling of irregular waves overtopping on the porous...

Journal: :Journal of Marine Science and Engineering 2021

Wave attenuation performance is the prime consideration when designing any floating breakwater. For a 2D hydrodynamic analysis of breakwater, wave evaluated by transmission coefficient, which defined as ratio between transmitted height and incident height. 3D some researchers still adopted this evaluation approach with taken at surface point, while others used mean coefficient within area. This...

2004
Richard W. Osman Robert B. Whitlatch

Recruitment is an important process in regulating many marine benthic communities and many studies have examined factors controlling the dispersal and distribution of larval immigrants. However, benthic species also have early post-settlement life-stages that are dramatically different from adult and larval stages. Predation on these stages potentially impacts measured recruitment and the benth...

2004
P. McIver

The linearized theory of water waves is used to examine the diffraction of an incident wave by a permeable breakwater that consists of a number of distinct elements. Under the assumption that the wavelength is much greater than the thickness, each element is replaced by a thin structure and the permeability is modeled by a suitable boundary condition applied on its surface. The diffracted wave ...

Journal: :international journal of maritime technology 0
saeed booshi 424 hafez avenue,, tehran-iran, mohammad javad ketabdari 424 hafez avenue,, tehran-iran,

in this paper wave transformation in a submerged sloped breakwater and its hydraulic performance was simulated by developing a numerical model in fortran. the code was established by combining porous flow and a two-phase model using vof method. modified navier-stokes and k-ε equations implemented to the model to simulate the flow in porous media. cut cell method was modified to simulate fluid t...

Journal: :Renewable & Sustainable Energy Reviews 2021

The multi-chamber Oscillating Water Column (OWC) device has recently become more attractive due to its potential high efficiency. In this paper, the hydrodynamic performance of a single-, dual- and triple-chamber OWC-breakwater are investigated experimentally. first instance, quantitative comparisons implemented understand OWC-breakwaters. Specific attention been dedicated capture width ratio (...

Journal: :Energy Conversion and Management 2021

Combining wave energy converters (WECs) with a floating breakwater provides potential approach to help develop commercial-scale power operations. This paper aims design and optimize three-dimensional integrated WEC array by developing numerical model of multi-floating-body coupled system based on flow theory viscous correction in the frequency domain. By analyzing surface elevations around brea...

Journal: :Coastal Engineering Proceedings 2010

2009
F. Dentale S. Mascetti

In the present article a new procedure is proposed to study the interactions between maritime breakwaters (submerged or emerged) and the waves, by integrating CAD and CFD software. The approach is meant to match closely the physical laboratory test procedure, and it is oriented at analyzing the hydrodynamic aspects of the phenomenon (overtopping, breaking, run-up, reflection, transmission) and ...

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