WAVE DIFFRACTION AND TRANSMISSION BY A SUBMERGED BREAKWATER

The wave field around a rectangular submerged breakwater is investigated by means of an experiment in numerical wave flume. The results were compared with those obtained making use of the Boundary Element Method. The numerical experiment is carried out to determine the share of the incident wave energy that are reflected, dissipated over the roof of the breakwater, and transmitted in the lee. The wave field before the breakwater (i.e. the quasi standing field) obtained with the CFD simulations is quite similar to that obtained with the BEM. Some relevant differences between the two models arise in the lee of the breakwater, because the wave motion is strongly affected by the dissipation occuring over the breakwater roof by friction and wave breaking. They cannot be foreseen with BEM, being the motion ideal. Their analysis show that the dissipation is more than halves the transmission of energy, despite the relevant submergence of the considerated breakwater.

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Numerical Wave Flume with Immersed Boundary Method and its Applicability in Wave Field Simulation around a Horizontal Circular Cylinder

PROCEEDINGS OF COASTAL ENGINEERING JSCE ◽

10.2208/proce1989.54.821 ◽

2007 ◽

Vol 54 ◽

pp. 821-825 ◽

Cited By ~ 1

Author(s):

Kwang-Ho LEE ◽

Norimi MIZUTANI

Keyword(s):

Circular Cylinder ◽

Wave Field ◽

Immersed Boundary Method ◽

Immersed Boundary ◽

Numerical Wave Flume ◽

Wave Flume ◽

Field Simulation ◽

Numerical Wave ◽

Wave Field Simulation ◽

Horizontal Circular Cylinder

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SOME PROBREMS ON OPEN BOUNDARY WITH WAVE DUMPING LAYER IN TUNAMI ANALYSIS BY NUMERICAL WAVE FLUME

Journal of Japan Society of Civil Engineers Ser B3 (Ocean Engineering) ◽

10.2208/jscejoe.69.i_706 ◽

2013 ◽

Vol 69 (2) ◽

pp. I_706-I_711

Author(s):

Tsunehiro SEKIMOTO

Keyword(s):

Open Boundary ◽

Numerical Wave Flume ◽

Wave Flume ◽

Numerical Wave

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Numerical Study of Wave Slamming on a Rectangular Slab

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.204-208.4971 ◽

2012 ◽

Vol 204-208 ◽

pp. 4971-4977

Author(s):

Ya Mei Lan ◽

Wen Hua Guo ◽

Yong Guo Li

Keyword(s):

Numerical Study ◽

Navier Stokes ◽

Governing Equations ◽

Reflected Waves ◽

Rans Equations ◽

Numerical Wave Flume ◽

Wave Flume ◽

Wave Slamming ◽

Numerical Wave ◽

Rectangular Slab

The CFD software FLUENT was used as the foundation to develop the numerical wave flume, in which the governing equations are the Reynolds-averaged Navier-Stokes (RANS) equations and the standard k~ε turbulence model. The wave generating and absorbing were introduced into the RANS equations as the source terms using the relaxation approach. A new module of the wave generating and absorbing function, which is suitable for FLUENT based on the volume of fluid method (VOF), was established. Within the numerical wave flume, the reflected waves from the model within the computation domain can be absorbed effectively before second reflection appears due to the wave generating boundary. The computational results of the wave pressures on the bottom of the rectangular slab were validated for the different relative clearance by the experimental data. Good agreements were found.

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AN APPLICATION OF NUMERICAL WAVE FLUME TO TRANSFORMATION OF BORE

PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN ◽

10.2208/prooe.17.281 ◽

2001 ◽

Vol 17 ◽

pp. 281-286

Author(s):

Toshihiko Takahashi ◽

Koji Fujima ◽

Ryosuke Asakura ◽

Tsuyoshi Ikeya

Keyword(s):

Numerical Wave Flume ◽

Wave Flume ◽

Numerical Wave

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Study Based on FLUENT of Broken Internal Waves in Different Slope Angles

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.638-640.1769 ◽

2014 ◽

Vol 638-640 ◽

pp. 1769-1777

Author(s):

Zi Tong Yan ◽

Liang Qiu Cheng ◽

Feng Yi ◽

Tai Zhong Chen ◽

Han Sun ◽

...

Keyword(s):

Internal Waves ◽

Solitary Waves ◽

Wave Breaking ◽

Slope Angle ◽

Ecological Environment ◽

Internal Solitary Waves ◽

Propagation Process ◽

Numerical Wave Flume ◽

Wave Flume ◽

New Methods

Internal waves will break in the process of communication, the broken will make water in upper and lower mixing, which has significant influence on the hydrodynamic and layered characteristics of density stratification of the water. In order to reveal the propagation of internal solitary waves, a 3d numerical wave flume was built. The research of the propagation of internal solitary waves in the regular topography and broken on slopes was based on FLUENT. Comparing the fragmentation degree of different slope angle and researching the energy dissipation of the wave propagation process , which are supposed to successfully match the results with the experiment results, can provide new methods and means for the further study of internal wave breaking characteristics and the improvement of ecological environment of water bodies.

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