Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Reflection Analysis of Impermeable Slopes under Bimodal Sea Conditions

Version 1 : Received: 6 January 2020 / Approved: 8 January 2020 / Online: 8 January 2020 (04:24:42 CET)

A peer-reviewed article of this Preprint also exists.

Orimoloye, S.; Karunarathna, H.; Reeve, D.E. Reflection Analysis of Impermeable Slopes under Bimodal Sea Conditions. J. Mar. Sci. Eng. 2020, 8, 133. Orimoloye, S.; Karunarathna, H.; Reeve, D.E. Reflection Analysis of Impermeable Slopes under Bimodal Sea Conditions. J. Mar. Sci. Eng. 2020, 8, 133.

Journal reference: J. Mar. Sci. Eng. 2020, 8, 133
DOI: 10.3390/jmse8020133

Abstract

Understanding of reflection characteristics of coastal seawalls is crucial for design. Wave reflection can cause difficulties to small vessel manoeuvring at the harbour entrance and constitute damaging scouring at the toe of coastal structures. Previous studies have considered reflection characteristics of coastal seawalls under wind-generated random waves without paying attention to the effects of wave bimodality created by the presence of swell waves. The present study focuses on the influence of random wave bimodality on reflective characteristics of coastal seawalls. More than eight hundred experimental tests have been conducted to examine the reflection performance of impermeable sloping seawalls under bimodal waves. Reflection coefficients were computed from each test. Analysis of results suggests that both unimodal and bimodal waves give similar reflection characteristics. However, the reflection coefficient in bimodal sea states seems to be more prolonged than in the unimodal sea states. It was found that the reflection coefficient of coastal seawalls is strongly influenced by the seawall slope, the wave steepness, relative water depth, and the surf similarity parameters. A new empirical reflection equation to describe the influence of wave bimodality on the reflection characteristics of coastal seawalls has been formulated based on this study.

Subject Areas

coastal seawall; impermeable; bimodal seas; reflection coefficient; bimodality; wave steepness; swell percentages

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.