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arXiv · 2606.05585

Topographic shielding of coastal zones and infrastructure against high tide

P. C. Harisankar·Tapas Sil
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Abstract

High tides are a threat to damage the coast and onshore structures. To investigate mitigation strategies, we simulate waves and a flood-like situation from two-dimensional (2D) dam-break flow with a ramp section at the end of the channel using smoothed particle hydrodynamics (SPH). We analyse the effects of ramps with various topographies to reduce the pressure on structures exerted by the wave. Structures of ramp surfaces influence flow behaviour significantly, absorbing kinetic energy of the wave. Increasing the ramp angle reduces the impact on the structure. A wave with a large velocity intensifies the flow impact, rendering the effects on all topography of the ramp almost insignificant. The ramp experiences the highest force exerted by the fluid on the bottom section. These insights enhance the understanding of ramp-induced energy dissipation and provide valuable implications for hydraulic engineering and structural resilience.

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P. C. Harisankar, Tapas Sil. 2026-06-04. Topographic shielding of coastal zones and infrastructure against high tide. https://arxiv.org/abs/2606.05585

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