Spectral wave transformation model for simulating refraction-diffraction with strongly reflecting coastal structures

Zheng, Jinhai; Thanh, Nguyen Viet; Zhang, Chi

doi:10.1007/s13131-011-0102-y

Cited by 7 publications

(5 citation statements)

References 14 publications

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“…Here, some of the studies conducted in solving and using these equations are briefly introduced. [15] developed WABED which is a nearshorewave transformation model for the wave refraction, diffraction, reflection and wave-current interaction for predicting the irregular wave refraction-diffraction around structures in coastal regions. After the above introduction, the mathematical formulation of Boussinesq equations is presented in the next section.…”

Section: Added Ledgementioning

confidence: 99%

Efficacy analysis of the length of entrance on the diffraction of waves behind two breakwaters

2015

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Any harbor should be protected from incoming waves. However, these waves are always diffracted at the entrance of the harbor and a fraction of the waves enters the harbor area. In the present paper, by the use of Boussinesq equations solved by Mike21 numerical software, a parametric study on the length of entrance of a simple harbor has been conducted and the diffraction of waves after passing the harbor entrance has been analyzed. As a result, the effects of the length of the entrance have been investigated on the safe zone behind the breakwaters of the harbor. To this end, a parameter called angle of safety is defined as a representative of the safe zone. Finally, an equation is presented to describe the behavior of the safe zone with respect to the length of the entrance. It has been observed that the angle of safety has a minimum of 57.5 degrees which increases with respect to the length of entrance which consequently increases the safe area behind the breakwaters.

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Section: Added Ledgementioning

confidence: 99%

Efficacy analysis of the length of entrance on the diffraction of waves behind two breakwaters

2015

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“…for the diffraction intensity by the reference [3,4]. C and C g is the velocity and the group velocity, respectively.…”

Section: Mathmatical Modelmentioning

confidence: 99%

“…b ε is the wave breaking energy dissipation parameterization. S ou is a source term (for example, wind forcing, bottom friction loss and nonlinear wave-wave interaction term, etc [3]. These features wave velocity on x, y coordinates are appropriate and x C , y C and C θ defined as： cos , cos ,…”

Section: Mathmatical Modelmentioning

confidence: 99%

Numerical Simulation of Wave Transformation Using Spectral Wave Action Model

Zhang

Hao

et al. 2014

AMM

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This paper presents a spectral wave action model to simulate random wave deformation and transformation. The wave model is based on the wave action balance equation and can simulate wave fields by accounting for wave breaking, shoaling, refraction, diffraction and wind effect in coastal waters. It is a finite-difference, phase averaged model for the steady-state wave spectral transformation. The wave model is applied to verify different experimental cases and real life case of considering the several factor effects. The calculated results agree with the experimental and field data. The results show that the wave model presented herein should be useful in simulating the wave transformation processes in complicated coastal waters.

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“…Sou is the source terms (e.g., wind forcing, bottom friction loss, nonlinear wave-wave interaction term etc.) [26]. These characteristic wave velocities with respect to x, y and  coordinates are accordingly C x , C y and C  defined as g g cos , cos , …”

Section: Wave Modelmentioning

confidence: 99%

Coupling of wave and current numerical model with unstructured quadtree grid for nearshore coastal waters

Zhang

Lin

et al. 2011

Sci. China Technol. Sci.

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This paper presents 2D wave-current interaction model for evaluating nearly horizontal wave-induced currents in the surf-zone and coastal waters. The hydrodynamic model is the two-dimensional depth-averaged nonlinear shallow water equations by using an unstructured non-staggered and multiple-level quadtree rectangular mesh, this mesh information is stored in simple data structures and it is easy to obtain a locally high resolution for important region. The intercell fluxes are computed based on the HLL (Harten-Lax-van Leer) approximate Riemann solver with shock capturing capability for computing the dry-to-wet interface of coastal line. The effects of pressure and gravity are included in source term in the model, this treatment can simplify the computation and eliminate numerical imbalance between source and flux terms. The wave model readily provides the radiation stresses that represent the shortwave-averaged forces in a water column for the hydrodynamic model and the wave model takes into account the effect of wave-induced nearshore currents and water level. The coupling model is applied to verify different experimental cases and real life case of considering the wave-current interaction. The calculated results agree with analytical solution, experimental and field data. The results show that the modeling approach presented herein should be useful in simulating the nearshore processes in complicated natural coastal domains.wave-current interaction, unstructured quadtree grid, finite volume method, HLL approximate Riemann solver, wave action spectral model Citation:Zhang M L, Wu W M, Lin L H, et al. Coupling of wave and current numerical model with unstructured quadtree grid for nearshore coastal waters.

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Spectral wave transformation model for simulating refraction-diffraction with strongly reflecting coastal structures

Cited by 7 publications

References 14 publications

Efficacy analysis of the length of entrance on the diffraction of waves behind two breakwaters

Efficacy analysis of the length of entrance on the diffraction of waves behind two breakwaters

Numerical Simulation of Wave Transformation Using Spectral Wave Action Model

Coupling of wave and current numerical model with unstructured quadtree grid for nearshore coastal waters

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