| 张旭峰, 李雪艳, 隋钰程, 曲恒良, 贺铭.圆柱形冲箱的线性波生成理论[J].海洋工程,2025,(6):152~162 |
| 圆柱形冲箱的线性波生成理论 |
| Theory for generating linear waves with a cylinder-shaped plunger |
| 投稿时间：2024-10-11 |
| DOI：10.16483/j.issn.1005-9865.2025.06.015 |
| 中文关键词: 冲箱式造波机 线性波 造波理论 光滑粒子流体动力学 数值波浪水槽 |
| 英文关键词:plunger-type wavemaker linear wave wave-generation theory smoothed particle hydrodynamics numerical wave flume |
| 基金项目:山东省自然科学基金项目（ZR2022ME145，ZR2023QE075）；港口航道泥沙工程交通行业重点实验室开放基金资助项目（YK224001-3） |
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| 中文摘要: |
| 虽然冲箱式造波机已广泛应用在许多实验室水池中，但至今仍缺乏精准的造波理论，即使是对于最基本的线性波。因此，首先基于圆柱形冲箱浸没体积变化量与所生成线性波体积之间的实时守恒原理，推导出已知波要素和冲箱参数下的冲箱运动方程。同时，综合考虑冲箱最大排水量、冲箱表面与波面的相容性以及波浪理论的适用范围，提出了所生成线性波的波要素约束条件。随后，使用光滑粒子流体动力学方法建立了数值波浪水槽，通过模拟文献中的物理试验并对比数值结果与试验数据，验证了数值波浪水槽的有效性。最后，应用推导出的造波理论在数值波浪水槽中生成线性波，并将波面、压强和流速的计算值与解析解进行比较，良好的吻合情况证实了该造波理论的可靠性。 |
| 英文摘要: |
| Although plunger-type wavemakers have been widely used in many laboratory wave flumes, precise wave-generation theory is still lacking, even for basic linear waves. First, the motion equation of the plunger is derived—given known wave and plunger parameters—based on the real-time conservation between the immersion volume change of the cylinder-shaped plunger and the volume of the generated linear waves. Furthermore, constraints on the wave parameters are proposed by considering the plunger’s maximum displacement, the compatibility of the plunger surface with the wave surface, and the applicability of linear wave theory. A numerical wave flume is then developed using the smoothed particle hydrodynamics (SPH) method. By simulating a published physical experiment and comparing the numerical results with experimental data, the validity of the numerical wave flume is verified. Finally, the derived wave-generation theory is applied in the numerical wave flume to produce linear waves, and the computed wave surfaces, pressures, and flow velocities are compared with analytical solutions. The good agreement confirms the reliability of the proposed theory. |
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