Ecological Seawall Effectiveness Analysis via Hydrodynamic Simulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for evaluating the disaster prevention and mitigation effectiveness of ecological seawalls are often one-sided, considering only single influencing factors, which results in low effectiveness due to the submerged breakwater and shoal affecting the seawall's performance.
Innovation Solution
A method involving seawall ecologicalization using preset vegetations and environment-friendly materials, combined with a three-dimensional space hydrodynamic force established via the Navier-Stokes equation and PIMPLE algorithm, to simulate wave climbing and overtopping, calculate shear stress, and determine the development index of tidal flats, thereby assessing the overall effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing evaluation methods consider only single influencing factors, then the evaluation process is simple, but the disaster prevention and mitigation effectiveness is low
Solution Approach 1:
The evaluation system is segmented into multiple independent modules, each evaluating a specific influencing factor (submerged breakwater, shoal, breakwater body, vegetation, etc.). This allows comprehensive evaluation of multiple factors while maintaining modular simplicity in the overall system structure.
Solution Approach 2:
The evaluation system is designed with multi-functionality to assess various aspects of ecological seawall performance simultaneously. The system can evaluate hydrodynamic forces, sediment transportation, wave overtopping, and ecological effects through a unified platform, improving reliability without proportionally increasing complexity.
2Reliability
If multiple influencing factors are considered in the evaluation, then the disaster prevention and mitigation effectiveness is improved, but the evaluation process becomes complex
Solution Approach 1:
The evaluation process is divided into distinct operational modules corresponding to different influencing factors. Each module can be operated independently, and the results are automatically integrated, making the complex multi-factor evaluation process more manageable and easier to operate through systematic organization.
Solution Approach 2:
The system incorporates feedback mechanisms where evaluation results from different factors are automatically integrated and used to provide comprehensive effectiveness assessments. This automated feedback loop simplifies the operation of multi-factor evaluation by handling data integration and analysis automatically.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the disaster prevention and mitigation effectiveness of ecological seawalls by comprehensively evaluating hydrodynamic forces and sediment transportation, improving the structural and ecological performance of breakwaters and revetments.
Implementation Method 1
establishing three-dimensional space hydrodynamic force for the target ecological seawall by using a preset Navier-Stokes equation and a preset PIMPLE algorithm
Implementation Method 2
obtaining a drag force and an inertia force of a plant population of the target ecological seawall
Implementation Method 3
obtaining a drag force and an inertia force of a plant population of the target ecological seawall
Implementation Method 4
calculating a suspended load sediment transportation volume by using a preset convection-diffusion equation
Implementation Method 5
calculating a suspended load sediment transportation volume by using a preset convection-diffusion equation
Implementation Method 6
determining a development index of tidal flats in front of dike of the target ecological seawall by using a preset Exner equation according to the two-dimensional bed surface change index
Data Source
AI summary
A method for analyzing disaster prevention and mitigation effectiveness of an ecological seawall is provided, including: performing seawall ecologicalization on a target seawall; establishing three-dimensional space hydrodynamic force for the target ecological seawall; simulating wave climbing on a dike body and a wave overtopping on a dike top of the target ecological seawall to obtain a wave overtopping index; calculating wave-flow bottom shear stress of the target ecological seawall, establishing a sediment movement model, and calculating suspended load and bed load sediment transportation volumes; calculating the change index of coastal bed surface according to the suspended load and bed load sediment transportation volumes, and determining a development index of tidal flats in front of dike of the target ecological seawall according to the change index; and calculating the disaster prevention and mitigation effectiveness grade of the target ecological seawall according to the wave overtopping index and the development index.