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文章在波浪水槽内通过数值模拟和物理实验相结合的方式,研究了波浪的产生和传播问题。在高阶谱计算模型中引入数值造波边界条件,建立了非周期谱波浪水槽。基于该水槽研究了具有不同波要素波浪的产生和传播问题,通过与理论解的比较验证了数值结果的正确性。结果表明线性波浪理论可预测具有较小Ursell数波浪的传播,而随着Ursell数的增大,波浪的运动可用二阶波浪理论解来描述。最后通过数值模拟结果和实验结果比较,验证了数值水槽的有效性,分析表明,波面升高及其对应振幅谱的计算结果与实验数据吻合较好。
The article studies the wave generation and propagation in the wave tank by means of numerical simulation and physical experiment. In the high-order spectral calculation model, numerical wave boundary conditions were introduced and aperiodic wave tank was established. The generation and propagation of waves with different wave elements are studied based on the sink. The correctness of numerical results is verified by comparison with theoretical solutions. The results show that the linear wave theory can predict the wave propagation with a smaller Ursell number, and the wave motion can be described by the second-order wave theory as the Ursell number increases. Finally, the numerical simulation is compared with the experimental results to verify the validity of the numerical reservoir. The analysis shows that the calculated wave height and its corresponding amplitude spectrum agree well with the experimental data.