复杂造波平台下波浪数模与物模全息耦合模型研究

Numerical and physical models are the two main tools available for studying the wave propagation and its interaction with coastal structures. Developing the coupling technique of the numerical and physical model is of important scientific and engineering significance, whether from further maximizing the integrated capacity of these two methods, or from improving the application efficiency of the testing facility. The coupling of the numerical and physical wave models is a recently new developed technique. In the past research, the 2D shallow water linear wavemaker theory is used, which leads to the incorrect maintaining for the bound waves and wave direction and unexpected generation of the free spurious waves, affecting the simulation accuracy and limiting its scope of application. For solving the above problems, this project aims to establish a full coupling technique of the numerical and physical models for nonlinear directional waves based on the nonlinear wavemaker theory and the complicated wavemaker platform. Multi-angle study and verification of the proposed model will be conducted by the theoretical derivation, analytical and numerical solutions, and experiments. Take the "L"-shape wavemaker system, for instance, the comprehensive performance of the full coupling model under the complicated wavemaker platform will be estimated. The conclusions will maximize the advantages of the numerical and physical wave models, improving the efficiency and accuracy of the model tests for the coastal engineering.

数值模拟和物理模拟是进行波浪传播及其与海岸建筑物相互作用等研究的两种主要方法。发展波浪数模与物模的耦合技术，无论从进一步挖掘两种方法的综合应用潜能，还是从更大限度地提高试验设备的应用效率均有重要的学术价值和工程意义。波浪数模与物模耦合模型是近年来发展的新课题，在以往研究中，多基于二维的浅水线性造波理论，导致无法正确维持数值波浪的高阶成分，无法识别真实的方向，以及物理模型试验中自由伪谐波的生成，直接影响试验波浪的精度，限制了其理论和实验的可拓展性。为解决这些问题，本课题将从非线性造波理论出发，建立基于复杂造波平台的多向非线性波的数模与物模全息耦合模拟模型。采用理论方程推导、解析解、数值解、实验验证等手段对所建模型进行全面的研究和验证。以“L”型造波机为例，研究和评估复杂造波平台下全息耦合模型的综合性能。所得成果可更好地发挥波浪数模和物模各自的优点，提高海岸工程模型试验研究的效率和精度。

数值模拟和物理模拟是进行波浪传播及其与海岸建筑物相互作用等研究的两种主要方法。发展波浪数模与物模的耦合技术，无论从进一步挖掘两种方法的综合应用潜能，还是从更大限度地提高试验设备的应用效率均有重要的学术价值和工程意义。波浪数模与物模耦合模型是近年来发展的新课题，在以往研究中，多基于二维的浅水线性造波理论，导致无法正确维持数值波浪的高阶成分，无法识别真实的方向，以及物理模型试验中自由伪谐波的生成，直接影响试验波浪的精度，限制了其理论和实验的可拓展性。为解决这些问题，本课题将从非线性造波理论出发，建立基于复杂造波平台的多向非线性波的数模与物模全息耦合模拟模型。采用理论方程推导、解析解、数值解、实验验证等手段对所建模型进行全面的研究和验证。以“L”型造波机为例，研究和评估复杂造波平台下全息耦合模型的综合性能。所得成果可更好地发挥波浪数模和物模各自的优点，提高海岸工程模型试验研究的效率和精度。