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A numerical investigation on wave height and wave setup of irregular wave propagation at the reef flat with porous media
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Dongbin He1, Yuxiang Ma1, *, Guohai Dong1
Haiyang Xuebao | 2022, 44(10) : 163 - 172
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Haiyang Xuebao | 2022, 44(10): 163-172
• Article •
A numerical investigation on wave height and wave setup of irregular wave propagation at the reef flat with porous media
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Dongbin He1, Yuxiang Ma1, *, Guohai Dong1
Affiliations
  • 1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
Published: 2022-10-01 doi: 10.12284/hyxb2022182
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A three-dimensional non-hydrostatic model based on volumed-averaged, Reynolds-averaged Navier-Stokes (VARANS) equations in sigma coordinate, is applied to simulate the propagation process of irregular wave over a typical fringing coral reef profile, with emphasis on the changes of wave height and wave setup on the reef flat. Compared with the laboratory measured data of several groups of wave and water level parameters, the model is shown to be capable of simulating well the wave transformation over the reef profile with and without porous media. Across all cases, the porous cases decrease the wave height by 12% around the breaking point, and by 28% on the reef flat than the smooth cases. As for the mean water level, the results show that the maximum setdown decreases by 43% on average for the porous cases than the smooth cases, while the wave setup on the reef flat for corresponding porous and smooth simulations is found to agree with an average difference of only 6%. In addition, the variation of porosity in the range 0.47−0.87 auses little effect on the wave setup.

non-hydrostatic model  /  porous media  /  reef profile  /  wave setup
Dongbin He, Yuxiang Ma, Guohai Dong. A numerical investigation on wave height and wave setup of irregular wave propagation at the reef flat with porous media[J]. Haiyang Xuebao, 2022 , 44 (10) : 163 -172 . DOI: 10.12284/hyxb2022182
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Year 2022 volume 44 Issue 10
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Article Info
doi: 10.12284/hyxb2022182
  • Receive Date：2021-08-17
  • Online Date：2026-02-01
  • Published：2022-10-01
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History
  • Received：2021-08-17
  • Revised：2022-06-09
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    1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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