Next Article in Journal
Study on Aeration Optimization and Sewage Treatment Efficiency of a Novel Micro-Pressure Swirl Reactor (MPSR)
Previous Article in Journal
Springing for Safe Water: Drinking Water Quality and Source Selection in Central Appalachian Communities
Previous Article in Special Issue
Two-Dimensional Free-Surface Flow Modeling for Wave-Structure Interactions and Induced Motions of Floating Bodies
Open AccessArticle

Experimental Evidence of the Influence of Recurves on Wave Loads at Vertical Seawalls

1
School of Water, Energy and Environment, Centre for Thermal Energy Systems and Materials, Cranfield University, College Rd, Wharley End, Bedford MK43 0AL, UK
2
Department of Ocean Engineering, Indian Institute of Technology, Madras, Chennai 600036, India
3
Forschungszentrum Kuste (FZK), Leibniz University Hannover & Technische Universität Braunschweig, Merkurstraße 11, D-30419 Hannover, Germany
*
Author to whom correspondence should be addressed.
Water 2020, 12(3), 889; https://doi.org/10.3390/w12030889 (registering DOI)
Received: 21 December 2019 / Revised: 17 February 2020 / Accepted: 13 March 2020 / Published: 21 March 2020
(This article belongs to the Special Issue Interaction between Waves and Maritime Structures)
The role of recurves on top of seawalls in reducing overtopping has been previously shown but their influence in the distribution and magnitude of wave-induced pressures and forces on the seawall remains largely unexplored. This paper deals with the effects of different recurve geometries on the loads acting on the vertical wall. Three geometries with different arc lengths, or extremity angles (αe), were investigated in large-scale physical model tests with regular waves, resulting in a range of pulsating (non-breaking waves) to impulsive (breaking waves) conditions at the structure. As the waves hit the seawall, the up-rushing flow is deflected seawards by the recurve and eventually, re-enters the underlying water column and interacts with the next incoming wave. The re-entering water mass is, intuitively, expected to alter the incident waves but it was found that the recurve shape does not affect wave heights significantly. For purely pulsating conditions, the influence of αe on peak pressures and forces was also negligible. In marked contrast, the mean of the maximum impulsive pressure and force peaks increased, even by a factor of more than two, with the extremity angle. While there is no clear relation between the shape of the recurve and the mean peak pressures and forces, interestingly the mean of the 10% highest forces increases gradually with αe and this effect becomes more pronounced with increasing impact intensity. View Full-Text
Keywords: recurves; recurve geometry; vertical seawalls; wave loads and pressures; pulsating and impulsive conditions recurves; recurve geometry; vertical seawalls; wave loads and pressures; pulsating and impulsive conditions
Show Figures

Figure 1

MDPI and ACS Style

Stagonas, D.; Ravindar, R.; Sriram, V.; Schimmels, S. Experimental Evidence of the Influence of Recurves on Wave Loads at Vertical Seawalls. Water 2020, 12, 889.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop