A water-sediment ecological geomorphology evolution numerical simulation method and system considering wave-current coupling, extreme weather and vegetation dynamic two-way feedback

Abstract

This invention belongs to the field of marine engineering technology and discloses a numerical simulation method and system for water and sediment ecological geomorphological evolution considering wave-current coupling, extreme weather, and bidirectional feedback of vegetation dynamics. The method includes: constructing a multi-module coupled model of hydrodynamics-wave-sediment-vegetation-topography, and setting an initial vegetation field; introducing vegetation parameters into each governing equation to characterize their influence on water flow resistance, wave dissipation, and sediment transport; introducing wave-current coupling and extreme weather forcing to simulate typhoon storm surge processes, and outputting the spatiotemporal distribution of hydrodynamic and environmental factors; updating suspended sediment transport, erosion and subsidence, and topographic evolution accordingly; simulating vegetation colonization, growth, competition, death, and lodging processes driven by hydrodynamic environmental factors; bidirectionally feeding back vegetation changes and topographic updates to each module to form a closed loop; and iteratively calculating to the termination condition to realize the simulation of the entire process of water and sediment ecological geomorphological evolution.

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