scholarly journals Quasi-2DV Circulation Model of Wave-induced Currents in the Surf Zone

1997 ◽  
Vol 13 ◽  
pp. 543-548
Author(s):  
Masamitsu Kuroiwa ◽  
Hideaki Noda ◽  
Yasuyuki Houchi
Keyword(s):  
Surf Zone ◽  
Circulation Model ◽  
Induced Currents ◽  
Wave Induced

scholarly journals Iteration Coupling Simulation of Random Waves and Wave-Induced Currents

2012 ◽  
Vol 2012 ◽  
pp. 1-13
Author(s):  
Jinhai Zheng ◽  
Tianwen Wang ◽  
Gang Wang ◽  
Chenming Zhang ◽  
Chi Zhang
Keyword(s):  
Wave Field ◽  
Circulation Model ◽  
Wave Transformation ◽  
Induced Current ◽  
Random Waves ◽  
Three Dimensional Model ◽  
Current Interaction ◽  
Induced Currents ◽  
Coupling Algorithm ◽  
Wave Induced

A two-way coupling algorithm for wave-current interaction is developed and implemented into a nearshore circulation model to investigate the effects of fully wave-current interaction on irregular wave transformation over an elliptic shoal. The wave field is simulated by a spectral wave model WABED, and the wave-induced current is solved by a quasi-three-dimensional model WINCM. The surface roller effects are represented in the formulation of surface stress, and the roller characteristics are solved by a roller evolution model. The proposed two-way coupling algorithm can describe both the generation of wave-induced current and the current-induced wave transformation, which is more physically reasonable than the one-way approaches. The model test with a laboratory experiment shows that wave-induced currents have an important influence on the wave transformation, for example, the wave energy defocusing due to the strong jet-like current along the centerline of the shoal. It is revealed that the accuracy of simulated wave field can be significantly improved by taking into account the two-way wave-current interaction.

scholarly journals VELOCITY AND SEDIMENT CONCENTRATION FIELDS ACROSS SURF ZONES

1986 ◽  
Vol 1 (20) ◽  
pp. 79 ◽  
Author(s):  
Hans H. Dette ◽  
Klemens Uliczka
Keyword(s):  
Surf Zone ◽  
Sediment Concentration ◽  
Irregular Waves ◽  
Quasi Equilibrium ◽  
Wave Flume ◽  
Sediment Volume ◽  
Measured Profile ◽  
Induced Currents ◽  
Transport Volume ◽  
Wave Induced

Wave-induced currents and sediment concentrations in suspension across the surf zone were investigated at prototype scale in the BIG WAVE FLUME in Hannover for combined beach and dune profiles as well during the development phase until quasi-equilibrium stage as after beach equilibrium conditions had been reached. The selected initial profiles were partly investigated in repeated tests with regular and irregular waves. Based upon the obtained experimental data a comparison is presented between the measured and calculated landward displacement of sediment volume through a selected point on the beach into seaward areas. The discrepancies in between the results for measured profile change and for calculated sediment transport volume derived from vertical current and suspension distributions are discussed.

scholarly journals A Numerical Model of the Wave-Induced Currents in the Turbulent Coastal Zone

2013 ◽  
Vol 2013 ◽  
pp. 1-7
Author(s):  
O. Fahmy ◽  
K. M. Fassieh ◽  
M. A. Zaki
Keyword(s):  
Numerical Model ◽  
Water Waves ◽  
Surf Zone ◽  
Nonlinear Partial Differential Equations ◽  
Initial Boundary ◽  
Initial Boundary Value Problem ◽  
Coastal Protection ◽  
Protection Measures ◽  
Induced Currents ◽  
Wave Induced

A numerical model is developed, validated and applied to the turbulent coastal currents. The currents are driven by the sea surface slope and the radiation stresses of water waves. They are resisted by friction due to turbulent eddies and sea bottom. The k-ε model is used to model the turbulent stresses. Five simultaneous nonlinear partial differential equations govern the depth-averaged dynamics in the surf zone. An implicit finite-difference scheme is used to obtain an accurate numerical solution of the resulting initial-boundary value problem. It is tested against the case of straight coast with uniform bottom slope and a protective jetty. To investigate the actual wave-induced currents, the model is applied to simulate the currents for three real case studies. Results show that the model could be used to compute currents caused by the constructing coastal protection measures and could predict the locations of accretion and scouring.

scholarly journals Numerical simulation of the three-dimensional wave-induced currents on unstructured grid

2017 ◽  
Vol 31 (5) ◽  
pp. 539-548
Author(s):  
Ping Wang ◽  
Ning-chuan Zhang ◽  
Shuai Yuan ◽  
Wei-bin Chen
Keyword(s):  
Numerical Simulation ◽  
Unstructured Grid ◽  
Three Dimensional ◽  
Induced Currents ◽  
Wave Induced ◽  
Dimensional Wave

Effects of wave-induced forcing on a circulation model of the North Sea

2016 ◽  
Vol 67 (1) ◽  
pp. 81-101 ◽  
Author(s):  
Joanna Staneva ◽  
Victor Alari ◽  
Øyvind Breivik ◽  
Jean-Raymond Bidlot ◽  
Kristian Mogensen
Keyword(s):  
North Sea ◽  
Circulation Model ◽  
The North ◽  
The North Sea ◽  
Wave Induced
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