Numerical investigation of solitary wave run-up attenuation by patchy vegetation

Chuyan Zhao; Yan Zhang; Jun Tang; Yongming Shen

doi:10.1007/s13131-020-1572-6

Volume 39 Issue 5

May 2020

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Chuyan Zhao, Yan Zhang, Jun Tang, Yongming Shen. Numerical investigation of solitary wave run-up attenuation by patchy vegetation[J]. Acta Oceanologica Sinica, 2020, 39(5): 105-114. doi: 10.1007/s13131-020-1572-6

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Chuyan Zhao, Yan Zhang, Jun Tang, Yongming Shen. Numerical investigation of solitary wave run-up attenuation by patchy vegetation[J]. Acta Oceanologica Sinica, 2020, 39(5): 105-114. doi: 10.1007/s13131-020-1572-6

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Numerical investigation of solitary wave run-up attenuation by patchy vegetation

doi: 10.1007/s13131-020-1572-6

Chuyan Zhao¹,
Yan Zhang¹,
Jun Tang^{1
,
,},
Yongming Shen^{1, 2}

1.
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
2.
Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China

Funds: The National Natural Science Foundation of China under contract Nos 51579036 and 51779039; the Fundamental Research Funds for the Central Universities of China under contract No. DUT19LAB13.

More Information

Corresponding author: E-mail: jtang@dlut.edu.cn
Received Date: 2019-03-28
Accepted Date: 2019-06-11

Available Online: 2020-12-28

Publish Date: 2020-05-25

Abstract

Abstract

Coastal vegetation is capable of decreasing wave run-up. However, because of regrowth, decay or man-made damage, coastal vegetation is always distributed in patches, and its internal distribution is often non-uniform. This study investigates the effects of patchy vegetation on solitary wave run-up by using a numerical simulation. A numerical model based on fully nonlinear Boussinesq equations is established to simulate the wave propagation on a slope with patchy vegetation. By using the model, the process of solitary wave run-up attenuation due to patchy vegetation is numerically analysed. The numerical results reveal that patchy vegetation can considerably attenuate the wave run-up in an effective manner. In addition, high-density patched vegetation can attenuate the solitary wave run-up more effectively than low-density patched vegetation can. For the same density, patchy vegetation with a uniform distribution has a better attenuation effect on wave run-up compared to that of patchy vegetation with a non-uniform distribution.
- solitary wave,
- run-up,
- patchy vegetation,
- Boussinesq equation

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References(28)

References

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