| 植被斜坡岸滩海啸波消减数值模拟研究 |
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| 引用本文： | 张明亮,冀永鹏,王旖旎,张洪兴,徐天平.植被斜坡岸滩海啸波消减数值模拟研究[J].海洋学报(英文版),2020,39(1):130-140. |
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| 作者姓名： | 张明亮 冀永鹏 王旖旎 张洪兴 徐天平 |
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| 作者单位： | 大连海洋大学海洋科技与环境学院, 大连, 116023,大连海洋大学海洋科技与环境学院, 大连, 116023,大连海洋大学海洋科技与环境学院, 大连, 116023,大连海洋大学海洋科技与环境学院, 大连, 116023,大连海洋大学海洋科技与环境学院, 大连, 116023 |
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| 基金项目： | The National Natural Science Foundation of China under contract No. 51879028; the National Key R & D Program of China under contract No. 2019YFC1407704; the Fund of Liaoning Marine Fishery Department under contract No. 201725. |
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| 摘 要： | An explicit one-dimensional model based on the shallow water equations(SWEs) was established in this work to simulate tsunami wave propagation on a vegetated beach. This model adopted the finite-volume method(FVM)for maintaining the mass balance of these equations. The resistance force caused by vegetation was taken into account as a source term in the momentum equation. The Harten–Lax–van Leer(HLL) approximate Riemann solver was applied to evaluate the interface fluxes for tracing the wet/dry transition boundary. This proposed model was used to simulate solitary wave run-up and long-periodic wave propagation on a sloping beach. The calibration process suitably compared the calculated results with the measured data. The tsunami waves were also simulated to discuss the water depth, tsunami force, as well as the current speed in absence of and in presence of forest domain. The results indicated that forest growth at the beach reduced wave energy loss caused by tsunamis. A series of sensitivity analyses were conducted with respect to variable parameters(such as vegetation densities, wave heights, wave periods, bed resistance, and beach slopes) to identify important influences on mitigating tsunami damage on coastal forest beach.
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| 关 键 词： | 浅水方程 HLL格式 海啸波 沿岸植被 波浪传播 |
| 收稿时间： | 2019/1/29 0:00:00 |
Numerical investigation on tsunami wave mitigation on forest sloping beach |
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| Zhang Mingliang,Ji Yongpeng,Wang Yini,Zhang Hongxing and Xu Tianping.Numerical investigation on tsunami wave mitigation on forest sloping beach[J].Acta Oceanologica Sinica,2020,39(1):130-140. |
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| Authors: | Zhang Mingliang Ji Yongpeng Wang Yini Zhang Hongxing and Xu Tianping |
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| Institution: | School of Ocean Science and Environment, Dalian Ocean University, Dalian 116023, China |
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| Abstract: | An explicit one-dimensional model based on the shallow water equations (SWEs) was established in this work to simulate tsunami wave propagation on a vegetated beach. This model adopted the finite-volume method (FVM) for maintaining the mass balance of these equations. The resistance force caused by vegetation was taken into account as a source term in the momentum equation. The Harten-Lax-van Leer (HLL) approximate Riemann solver was applied to evaluate the interface fluxes for tracing the wet/dry transition boundary. This proposed model was used to simulate solitary wave run-up and long-periodic wave propagation on a sloping beach. The calibration process suitably compared the calculated results with the measured data. The tsunami waves were also simulated to discuss the water depth, tsunami force, as well as the current speed in absence of and in presence of forest domain. The results indicated that forest growth at the beach reduced wave energy loss caused by tsunamis. A series of sensitivity analyses were conducted with respect to variable parameters (such as vegetation densities, wave heights, wave periods, bed resistance, and beach slopes) to identify important influences on mitigating tsunami damage on coastal forest beach. |
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| Keywords: | shallow water equations HLL scheme tsunami waves coastal vegetation wave propagation |
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