Inertial energy dissipation in shallow-water breaking waves

2020 ◽  
Vol 890 ◽  
Author(s):  
W. Mostert ◽  
L. Deike
Keyword(s):  
Energy Dissipation ◽  
Shallow Water ◽  
Breaking Waves ◽  
Image Position ◽  
Inertial Energy

A Coupled-Mode Technique for the Run-Up of Non-Breaking Dispersive Waves on Plane Beaches

2006 ◽  
Author(s):  
K. A. Belibassakis ◽  
G. A. Athanassoulis
Keyword(s):  
Shallow Water ◽  
Water Waves ◽  
Wave Equations ◽  
Neumann Boundary ◽  
Breaking Waves ◽  
Numerical Results ◽  
Coupled Mode Theory ◽  
Mode Theory ◽  
Coupled Mode ◽  
Run Up

A coupled-mode model is developed and applied to the transformation and run-up of dispersive water waves on plane beaches. The present work is based on the consistent coupled-mode theory for the propagation of water waves in variable bathymetry regions, developed by Athanassoulis & Belibassakis (1999) and extended to 3D by Belibassakis et al (2001), which is suitably modified to apply to a uniform plane beach. The key feature of the coupled-mode theory is a complete modal-type expansion of the wave potential, containing both propagating and evanescent modes, being able to consistently satisfy the Neumann boundary condition on the sloping bottom. Thus, the present approach extends previous works based on the modified mild-slope equation in conjunction with analytical solution of the linearised shallow water equations, see, e.g., Massel & Pelinovsky (2001). Numerical results concerning non-breaking waves on plane beaches are presented and compared with exact analytical solutions; see, e.g., Wehausen & Laitone (1960, Sec. 18). Also, numerical results are presented concerning the run-up of non-breaking solitary waves on plane beaches and compared with the ones obtained by the solution of the shallow-water wave equations, Synolakis (1987), Li & Raichlen (2002), and experimental data, Synolakis (1987).

Energy dissipation through wind-generated breaking waves

2012 ◽  
Vol 30 (5) ◽  
pp. 822-825 ◽  
Author(s):  
Shuwen Zhang ◽  
Ruixue Cao ◽  
Lingling Xie
Keyword(s):  
Energy Dissipation ◽  
Breaking Waves

scholarly journals Particle-based Shallow Water Simulation with Splashes and Breaking Waves

2017 ◽  
Vol 25 (0) ◽  
pp. 486-493
Author(s):  
Makoto Fujisawa ◽  
Takuya Nakada ◽  
Masahiko Mikawa
Keyword(s):  
Shallow Water ◽  
Breaking Waves ◽  
Water Simulation

scholarly journals Breaking waves in deep water: measurements and modeling of energy dissipation

2019 ◽  
Vol 69 (10) ◽  
pp. 1165-1179
Author(s):  
Fadia Ticona Rollano ◽  
Adam Brown ◽  
Ashley Ellenson ◽  
H. Tuba Özkan-Haller ◽  
Jim Thomson ◽  
...  
Keyword(s):  
Energy Dissipation ◽  
Deep Water ◽  
Breaking Waves

Estimates of Kinetic Energy Dissipation under Breaking Waves

1996 ◽  
Vol 26 (5) ◽  
pp. 792-807 ◽  
Author(s):  
E.A. Terray ◽  
M.A. Donelan ◽  
Y.C. Agrawal ◽  
W.M. Drennan ◽  
K.K. Kahma ◽  
...  
Keyword(s):  
Energy Dissipation ◽  
Kinetic Energy ◽  
Breaking Waves

scholarly journals Study on the Best Depth of Stilling Basin with Shallow-Water Cushion

Water ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1801
Author(s):  
Qiulin Li ◽  
Lianxia Li ◽  
Huasheng Liao
Keyword(s):  
Energy Dissipation ◽  
Shallow Water ◽  
Froude Number ◽  
Flow Regime ◽  
Dissipation Rate ◽  
Hydraulic Jump ◽  
Energy Dissipation Rate ◽  
Main Stream ◽  
Stilling Basin ◽  
Key Factor

The depth of the stilling basin with shallow-water cushion (SBSWC) is a key factor that affects the flow regime of hydraulic jump in the basin. However, the specific depth at which the water cushion is considered as ‘shallow’ has not been stated clearly by far, and only conceptual description is provided. Therefore, in order to define the best depth of SBSWC and its relationship between the Froude number at the inlet of the stilling basin, a large number of experiments were carried out to investigate SBSWC. First of all, 30 cases including five different Froude numbers and six depths were selected for which large eddy simulation (LES) was firstly verified by the experiments and then adopted to calculate the hydraulic characteristics in the stilling basin. Finally, three standards, based on the flow regime of hydraulic jump, the location of the main stream and the energy dissipation rate, were proposed to define the best depth of SBSWC. The three criteria are as follows: (1) a complete hydraulic jump occurs in the basin (2) the water cushion is about 1/10–1/3 deep of the stilling basin, and (3) the energy dissipation rate is more than 70% and the unit volume energy dissipation rate is as high as possible. It showed that the best depth ratio of SBSWC (depth to length ratio) was between 0.1 and 0.3 and it also indicated the best depth increased with the increase in Froude number. The results of the work are of significance to the design and optimizing of SBSWC.

scholarly journals Water wave transmission and energy dissipation by a floating plate in the presence of overwash

2020 ◽  
Vol 889 ◽  
Author(s):  
Filippo Nelli ◽  
Luke G. Bennetts ◽  
David M. Skene ◽  
Alessandro Toffoli
Keyword(s):  
Energy Dissipation ◽  
Water Wave ◽  
Wave Transmission ◽  
Floating Plate ◽  
Image Position

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