Laboratory Experiments on the Influence of the Wave Spectrum Enhancement Factor on a Rubble Mound Breakwater
This paper experimentally explored the influence of the wave spectrum shape variation on breakwater design. The energy spectrum function generally considered for the design of coastal structures is the JONSWAP spectrum. The laboratory results were therefore used to assess the impact of changing the...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-12-01
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| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/10/12/2035 |
| Summary: | This paper experimentally explored the influence of the wave spectrum shape variation on breakwater design. The energy spectrum function generally considered for the design of coastal structures is the JONSWAP spectrum. The laboratory results were therefore used to assess the impact of changing the spectrum shape parameter (<i>PEF</i>). We analysed armour stability and wave overtopping in a wave flume with a geometric similarity ratio of 1:30. The experimental results showed that the <i>PEF</i> has maximum influence on overtopping and wave pressures on the crown wall. For a <i>PEF</i> value of 3.3, overtopping was much higher (30% to 100% higher) than with a <i>PEF</i> of 1. Pressure on the crown wall was 20% higher with a <i>PEF</i> of 3.3 in comparison with that for a <i>PEF</i> equal to 1. The stability of the breakwater’s block armour is less sensitive to the <i>PEF</i> variation. |
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| ISSN: | 2077-1312 |