An energy-controlling boundary condition for partial wave reflections in the mild slope equation |
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Affiliation: | 1. School of Civil Engineering, Xi''an University of Architecture and Technology, Xi''an, Shaanxi 710055, China;2. State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China;3. Architectural Design and Research Institute of Henan Province Co., Ltd, Zhengzhou, Henan 450014, China |
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Abstract: | An energy-controlling technique to actively manage the reflective property of waves from solid boundary is presented. As linear waves propagate through an energy-controlling area, a reduction in wave heights occurs due to energy dissipation, which can be placed under direct control through the imaginary part of the wavenumber and phase velocity. Based on this relationship, the present study investigates a new method to control reflected waves with desired heights in the mild slope equation model. The method is validated through numerical tests for various reflection coefficients and the results confirm the promising use of energy-controlling boundary condition for partial wave reflections. |
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Keywords: | Mild slope equation Energy-controlling area Wave reflection Boundary condition Finite different method |
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