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Large impulsive forces on recurved parapets under non-breaking waves. A numerical study
- Publication Year :
- 2018
-
Abstract
- This paper describes 2-D numerical simulations of velocity and pressure fields generated by non-breaking waves on a vertical breakwater with a recurved parapet wall. The influence of the geometrical characteristics of the parapet is investigated. An impulsive pressure force is identified and discussed with respect to the pure vertical wall case. This force is generated by the seaward flow confinement induced by the surging wave crest. We refer to this impulsive impact as “confined-crest impact”. A large part of the vertical wall is affected by an impulsive increase in pressure caused by pulsating wave, compared to the case where the parapet is completely vertical. The maximum values of the impulsive pressures are localized under the recurved parapet. The total force increase on the entire structure may be significant when compared to the pure vertical wall case.
- Subjects :
- Environmental Engineering
010504 meteorology & atmospheric sciences
Flow (psychology)
Breaking wave
Non-breaking waves, Vertical breakwaters, Recurved parapet wall, Impulsive forces
Non-breaking waves
Ocean Engineering
Mechanics
01 natural sciences
Settore ICAR/01 - Idraulica
010305 fluids & plasmas
Physics::Fluid Dynamics
Impulsive forces
Recurved parapet wall
Vertical breakwaters
Breakwater
0103 physical sciences
Parapet
Wave crest
Geology
0105 earth and related environmental sciences
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....392f56702f5f655a3efe28dd67224d47