Numerical simulation for wave climbing process on woody plants covered slope

Xu Haijue; Hu Ping; Bai Yuchuan; Yang Bo

doi:10.3969/j.issn.0253-4193.2020.03.002

Volume 42 Issue 3

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Xu Haijue，Hu Ping，Bai Yuchuan, et al. Numerical simulation for wave climbing process on woody plants covered slope[J]. Haiyang Xuebao，2020, 42(3)：10–24，doi:10.3969/j.issn.0253−4193.2020.03.002

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Numerical simulation for wave climbing process on woody plants covered slope

doi: 10.3969/j.issn.0253-4193.2020.03.002

Xu Haijue^{1, 2
,},
Hu Ping²,
Bai Yuchuan^{1, 2
,
,},
Yang Bo³

1.
The State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China
2.
Institute for Sediment on River and Coast Engineering, Tianjin University, Tianjin 300350, China
3.
AECOM (Tianjin) Engineering Consultants Co, Ltd, Tianjin 300072, China

Received Date: 2018-10-16
Rev Recd Date: 2018-12-26

Available Online: 2020-11-18

Publish Date: 2020-03-25

Abstract

Abstract

As a new type of coastal ecological protection measure, ecological buffer zone formed by woody plants in coastal areas has attracted more and more attention in coastal engineering projects. It is an urgent problem to be solved that how to carry out the research on the protection effect of woody plants. The numerical simulation method is used in this paper. Firstly, a theoretical model of surface wave attenuation for wave climbing along a slope under the protection of woody vegetation is proposed by including the drag forces of branches and trunks in the N-S equation. Next, the MAC method is used to track the trajectories of water particles on the free surface. Then, taking the wave climbing along a slope of 1/30 as an example, the wave propagation process along an inclined beach with or without vegetation is discussed. The validity of the numerical model is verified by comparing the numerical result and those of the previous experiments. Finally, influences of the vegetation characteristics, such as height, density and tilt angle of plant branches and those of wave factors on wave dissipation are discussed and analyzed, respectively. Additionally, the rules of wave dissipation are summarized. The calculation results of this model can also be applicable to the design of revetment structures and ecological landscape.
- ecological protection,
- numerical simulation,
- drag force,
- slope propagation,
- vegetation characteristics

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References(26)

References

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