scholarly journals MEASUREMENT OF WAVE PRESSURE ON PERFORATED CAISSON WALL UNDER OBLIQUE WAVE INCIDENCE

2014 ◽  
Vol 1 (34) ◽  
pp. 68
Author(s):  
Sang-Ho Oh ◽  
Chang-Hwan Ji ◽  
Young Min Oh ◽  
Hee Do Ahn
Keyword(s):  
Wave Pressure ◽  
Oblique Wave ◽  
Perforated Caisson ◽  
Wave Incidence

scholarly journals ANOTHER APPROACH TO LONGSHORE CURRENT EVALUATION

1986 ◽  
Vol 1 (20) ◽  
pp. 100
Author(s):  
M.A. Losada ◽  
A. Sanchez-Archilla ◽  
C. Vidal
Keyword(s):  
Simple Model ◽  
Predictive Model ◽  
General Expression ◽  
Current Velocity ◽  
Laboratory Data ◽  
Reynolds Stresses ◽  
Longshore Current ◽  
Current Generation ◽  
Oblique Wave ◽  
Wave Incidence

A simple model to predict the longshore current velocity at the breaker line on a beach with oblique wave incidence, is presented. The model balances driving and resistance terms (gradients of radiation and turbulent Reynolds stresses and bottom friction) to get a general expression for the velocity. This equation shows explicitely the influence of Iribarren's parameter on longshore current generation. It has been tested with field and laboratory data, obtaining a reasonable fit to measured values. The resulting (predictive) model is expected to be valid for any type of breakers though the calibration has been mainly done for spilling and plunging types, due to the scarcity of results for other breakers.

scholarly journals Modeling large scale shoreline sand waves under oblique wave incidence

2012 ◽  
Vol 117 (F3) ◽  
pp. n/a-n/a ◽  
Author(s):  
N. van den Berg ◽  
A. Falqués ◽  
F. Ribas
Keyword(s):  
Large Scale ◽  
Sand Waves ◽  
Oblique Wave ◽  
Wave Incidence

scholarly journals FORMATION OF DYNAMICALLY STABLE LAKESHORE UNDER SEASONALLY CHANGING WAVE DIRECTION

2011 ◽  
Vol 1 (32) ◽  
pp. 85
Author(s):  
Toshinori Ishikawa ◽  
Takaaki Uda ◽  
Toshiro San-nami ◽  
Shusuke Watanabe
Keyword(s):  
Numerical Simulation ◽  
Sandy Beach ◽  
Beach Nourishment ◽  
Lake Kasumigaura ◽  
Wave Direction ◽  
Spur Dike ◽  
Oblique Wave ◽  
The Stability ◽  
Wave Incidence

In the Ukishima region of Lake Kasumigaura, beach nourishment along with the construction of groins has been carried out to recover a sandy beach. After the beach nourishment, part of the nourishment sand was transported away from the beach, turning around the tip of the downcoast groin owing to the oblique wave incidence in winter. To enhance the stability of the beach, the groins were extended and a spur dike was constructed. To design these structures, a numerical simulation using the BG model was carried out, and the optimum shapes were determined by taking into account the seasonally changing wave direction. The effectiveness of the spur dike was numerically evaluated using the BG model.

scholarly journals A mechanism for sandbar straightening by oblique wave incidence

2013 ◽  
Vol 40 (11) ◽  
pp. 2726-2730 ◽  
Author(s):  
R. Garnier ◽  
A. Falqués ◽  
D. Calvete ◽  
J. Thiébot ◽  
F. Ribas
Keyword(s):  
Oblique Wave ◽  
Wave Incidence

scholarly journals SIMULATION OF IRREGULAR WAVE PRESSURE ON PERFORATED BREAKWATERS

2011 ◽  
Vol 1 (32) ◽  
pp. 29 ◽  
Author(s):  
Xuefeng Chen ◽  
Yucheng Li ◽  
Liu Long
Keyword(s):  
Experimental Data ◽  
Numerical Method ◽  
Water Level ◽  
Least Squares Method ◽  
Front Wall ◽  
Back Wall ◽  
Wave Pressure ◽  
Irregular Wave ◽  
The Stability ◽  
Perforated Caisson

In this paper, the wave pressures on the perforated caissons breakwaters are investigated. The front wall of the perforated caissons is usually perforated above a certain water level considering the stability of the structure, and the chamber of the perforated caisson is filled with rock. Based on the RANS and k- equations, the numerical method to simulate the interaction of the irregular wave with the perforated breakwaters is researched. Moreover, the wave pressures distribution on the front perforated wall and the back wall are discussed through the numerical calculations, respectively. Then, the simplified formulas to compute the wave pressures on the different position of perforated caisson are obtained from experimental data by using the least-squares method.

INSTABILITY OF A COASTLINE WITH VERY OBLIQUE WAVE INCIDENCE

2007 ◽  
Author(s):  
Lucia Uguccioni ◽  
Rolf Deigaard ◽  
Jørgen Fredsøe
Keyword(s):  
Oblique Wave ◽  
Wave Incidence
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