Wave impact on a wall using pressure-impulse theory. I: Trapped air

Citation
Dj. Wood et al., Wave impact on a wall using pressure-impulse theory. I: Trapped air, J WATERW P, 126(4), 2000, pp. 182-190
Citations number
22
Categorie Soggetti
Civil Engineering
Journal title
JOURNAL OF WATERWAY PORT COASTAL AND OCEAN ENGINEERING-ASCE
ISSN journal
0733950X → ACNP
Volume
126
Issue
4
Year of publication
2000
Pages
182 - 190
Database
ISI
SICI code
0733-950X(200007/08)126:4<182:WIOAWU>2.0.ZU;2-3
Abstract
Often when a plunging breaker impacts on a wall, an air pocket is trapped a t the wall. This paper extends a pressure-impulse model for wave impact on a wall to include a simple model of a trapped air pocket. The inclusion of an air pocket leads to a higher impulse at impact for a given wave as there is some rebound of the water. The model is shown to compare satisfactorily with small-scale experimental data performed on a caisson breakwater with an impermeable berm. The effect of a porous berm on pressure impulse is inv estigated theoretically in a companion paper.