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An integral treatment of friction during a swash uprush
https://orcid.org/0000-0002-0274-4527
Abstract The effects of bed friction are modelled for the flow near the moving shoreline during the uprush phase of a swash event by extending the Pohlhausen method used by Whitham (1955) to a sloping bed. The tip of the swash near the moving shoreline is treated in an integral sense as a region of uniform velocity, being acted on by the forces of friction, gravity, and the pressure force induced by the frictionless flow behind the swash tip. The bed shear stress is parameterized by using the quadratic dependence on velocity. The theory is compared to data of the shoreline velocity and position in the swash of breaking solitary waves, and the friction coefficient is determined from direct measurements of bed shear stress. The theoretical predictions are in good agreement with the laboratory results in terms of time history of the shoreline velocity and position, as well as the run-up.
Highlights Whitham's (1955) Pohlhausen method extended to treat friction in the swash tip during uprush. Predicted shoreline trajectories including effects of friction show good agreement with experimental data of shoreline motion. Predicted run-up of breaking solitary waves shows agreement with experimental data.
An integral treatment of friction during a swash uprush
https://orcid.org/0000-0002-0274-4527
Abstract The effects of bed friction are modelled for the flow near the moving shoreline during the uprush phase of a swash event by extending the Pohlhausen method used by Whitham (1955) to a sloping bed. The tip of the swash near the moving shoreline is treated in an integral sense as a region of uniform velocity, being acted on by the forces of friction, gravity, and the pressure force induced by the frictionless flow behind the swash tip. The bed shear stress is parameterized by using the quadratic dependence on velocity. The theory is compared to data of the shoreline velocity and position in the swash of breaking solitary waves, and the friction coefficient is determined from direct measurements of bed shear stress. The theoretical predictions are in good agreement with the laboratory results in terms of time history of the shoreline velocity and position, as well as the run-up.
Highlights Whitham's (1955) Pohlhausen method extended to treat friction in the swash tip during uprush. Predicted shoreline trajectories including effects of friction show good agreement with experimental data of shoreline motion. Predicted run-up of breaking solitary waves shows agreement with experimental data.
An integral treatment of friction during a swash uprush
https://orcid.org/0000-0002-0274-4527
Abstract The effects of bed friction are modelled for the flow near the moving shoreline during the uprush phase of a swash event by extending the Pohlhausen method used by Whitham (1955) to a sloping bed. The tip of the swash near the moving shoreline is treated in an integral sense as a region of uniform velocity, being acted on by the forces of friction, gravity, and the pressure force induced by the frictionless flow behind the swash tip. The bed shear stress is parameterized by using the quadratic dependence on velocity. The theory is compared to data of the shoreline velocity and position in the swash of breaking solitary waves, and the friction coefficient is determined from direct measurements of bed shear stress. The theoretical predictions are in good agreement with the laboratory results in terms of time history of the shoreline velocity and position, as well as the run-up.
Highlights Whitham's (1955) Pohlhausen method extended to treat friction in the swash tip during uprush. Predicted shoreline trajectories including effects of friction show good agreement with experimental data of shoreline motion. Predicted run-up of breaking solitary waves shows agreement with experimental data.
An integral treatment of friction during a swash uprush
Pujara, Nimish (author) / Liu, Philip L.-F. (author) / Yeh, Harry (author)
Coastal Engineering ; 114 ; 295-300
2016-04-16
6 pages
Article (Journal)
Electronic Resource
English
An integral treatment of friction during a swash uprush
| Online Contents | 2016
An integral treatment of friction during a swash uprush
| British Library Online Contents | 2016
An integral treatment of friction during a swash uprush
| British Library Online Contents | 2016
An integral treatment of friction during a swash uprush
| British Library Online Contents | 2016
| British Library Online Contents | 2014