Wave-Current Interaction in Coastal Inlets and River Mouths

2011 ◽  
Author(s):  
Tim T. Janssen ◽  
Thomas H. Herbers
Keyword(s):  
Current Interaction ◽  
Coastal Inlets ◽  
River Mouths

scholarly journals WAVES AND STRONGLY SHEARED CURRENTS: EXTENSIONS TO COASTAL OCEAN MODELS

2018 ◽  
pp. 40
Author(s):  
Saeideh Banihashemi ◽  
James T. Kirby ◽  
Fengyan Shi ◽  
Zhifei Dong
Keyword(s):  
Group Velocity ◽  
Circulation Model ◽  
Spectral Peak ◽  
Action Density ◽  
Wave Forcing ◽  
Current Interaction ◽  
Hydrostatic Model ◽  
Wave Models ◽  
River Mouths ◽  
New Framework

Significant progress has been made in the numerical modeling of wave-current interaction during the past decade. Typical coastal circulation and wave models, however, still only employ theoretical formulations which take depth-uniform mean flows into account, with realistic, non-uniform flows treated as being depth uniform through some chosen averaging procedure. Depending on the choice of average over depth, significant errors may arise in the estimation of properties such as group velocity and action density in realistic conditions. These errors, in turn, are fed back into the circulation model through incorrect representation of the vertical structure of wave forcing. A new framework for wave-current interaction theory for strongly sheared mean flows has been developed using vortex force formalism by Dong (2016). The resulting formulation leads to a conservation law for wave action identical to that of Voronovich (1976), and to expressions for wave-averaged forces in the Craik-Leibovich vortex force formalism. In this study, we are completing the development of a coupled NHWAVE/SWAN which implements the wave forcing formulation of Dong (2016) in a wave-averaged version of the non-hydrostatic model NHWAVE (Ma et al., 2012). The SWAN model is also being extended to incorporate a better representation of frequency and direction-dependent group velocity and intrinsic frequency in the neighborhood of the spectral peak, thus improving on the present practice of using quantities evaluated only at the spectral peak. The resulting model is being tested against field data collected in several recent experiments involving strong, vertically sheared currents in river mouths or straits.

scholarly journals MODELING OF WAVE-CURRENT INTERACTION USING A MULTIDIRECTIONAL WAVE-ACTION BALANCE EQUATION

2011 ◽  
Vol 1 (32) ◽  
pp. 47 ◽  
Author(s):  
Yan Ding ◽  
Sam S. Y. Wang
Keyword(s):  
Balance Equation ◽  
Wave Model ◽  
Tidal Currents ◽  
Wave Action ◽  
Observation Data ◽  
Action Model ◽  
Current Interaction ◽  
Ambient Currents ◽  
Multidirectional Wave ◽  
River Mouths

This study presents an integrated numerical model to simulate wave deformation/transformation in tidal inlets or river mouths with ambient currents (e.g. tidal currents, river inflows) by carefully modeling the effect of wave-current interaction. A multidirectional wave-action balance equation is used to compute random/directional wave processes such as diffraction, refraction, shoaling, wave breaking, as well as wave-current interaction. This wave action model is coupled with a two-dimensional hydrodynamic model, the feedback effect of wave and current can be effectively simulated. This model is validated by simulating wave laboratory experiments in an inlet entrance, and waves and tidal currents in Grays Harbor, WA by using available field observation data in 1999. The capabilities of the wave model for simulating wave-current interaction and the corresponding breaking effect are confirmed in the study.

Hydrological and hydrochemical research of the mouths of the small rivers flowing to the White sea in the winter low water season of 2019

2019 ◽  
Vol 59 (6) ◽  
pp. 1089-1092
Author(s):  
I. V. Miskevich ◽  
A. V. Leshchev ◽  
D. S. Moseev ◽  
A. S. Lokhov
Keyword(s):  
White Sea ◽  
Small Rivers ◽  
The White Sea ◽  
Hydrochemical Parameters ◽  
Catchment Basin ◽  
Onega Bay ◽  
Short Period ◽  
Tidal Estuaries ◽  
Hydrochemical Studies ◽  
River Mouths

In the winter low water season in March and the first week of April 2019, complex hydrological and hydrochemical studies were carried out at the mouths of two small rivers of the White Sea catchment basin (the Mudyuga river, which flows into the Dvina Bay, and the Tamitsa river, which flows into the Onega Bay). The results indicate significant differences in the short-period variability of hydrological and hydrochemical parameters in the winter in the studied river mouths compared with the characteristics observed in the tidal estuaries of large and medium rivers, as well as in the mouths of small rivers of the southern seas.

Wave-current interaction effects on waves and their loads on a vertical cylinder

2021 ◽  
pp. 103832
Author(s):  
Amin Ghadirian ◽  
Malene Hovgaard Vested ◽  
Stefan Carstensen ◽  
Erik Damgaard Christiensen ◽  
Henrik Bredmose
Keyword(s):  
Vertical Cylinder ◽  
Interaction Effects ◽  
Current Interaction

scholarly journals The Non-Relativistic Many-Body Quantum-Mechanical Hamiltonian with Diamagnetic Current-Current Interaction

2021 ◽  
Author(s):  
Ladislaus Alexander Bányai
Keyword(s):  
Solid State ◽  
Analogous Result ◽  
Charged Particles ◽  
Coulomb Gauge ◽  
Quantum Mechanical ◽  
Photon Propagator ◽  
Coulomb Interactions ◽  
Many Body ◽  
Transverse Current ◽  
Current Interaction

AbstractWe extend the standard solid-state quantum mechanical Hamiltonian containing only Coulomb interactions between the charged particles by inclusion of the (transverse) current-current diamagnetic interaction starting from the non-relativistic QED restricted to the states without photons and neglecting the retardation in the photon propagator. This derivation is supplemented with a derivation of an analogous result along the non-rigorous old classical Darwin-Landau-Lifshitz argumentation within the physical Coulomb gauge.

Effects of wave-current interaction on the waves, cold-water mass and transport of diluted water in the Beibu Gulf

2020 ◽  
Vol 39 (1) ◽  
pp. 25-40
Author(s):  
Jingling Yang ◽  
Shaocai Jiang ◽  
Junshan Wu ◽  
Lingling Xie ◽  
Shuwen Zhang ◽  
...  
Keyword(s):  
Water Mass ◽  
Cold Water ◽  
Beibu Gulf ◽  
Cold Water Mass ◽  
Current Interaction ◽  
The Waves
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