基于OpenFOAM的潜堤—双弧板组合结构水动力特性数值研究

鉴于双弧板式透空堤的消浪性能仍不理想，提出了一种潜堤—双弧板组合结构，并基于OpenFOAM软件建立了波浪与该结构相互作用的数值模型，采用试验结果对所建数值模型进行验证。在此基础上，讨论了该新型结构的消浪特性、波压力分布特征以及所受波浪力的影响因素。结果表明，透射系数随相对板宽的增大而减小，反射系数则相反。透射与反射系数随相对潜深的变化较为显著。当结构位于静水位上方（即相对潜深为-0.05）时，透射系数最小而反射系数最大；当结构位于静水位下方（即相对潜深为0.05）时，透射系数最大而反射系数最小。该组合结构两块弧板上下表面的正负压力变化关于横轴近似对称，不同测点处的压力值差异显著。水平波浪力与垂直波浪力的变化趋势大致相似，但垂直波浪力远大于水平波浪力。研究结果可为其工程应用提供理论指导与技术支撑。

Numerical study on hydrodynamic characteristics of submersible breakwater- double arc plate composite structures based on OpenFOAM

In view of the unsatisfactory fluctuation performance of the double arc plate permeable breakwater, a submersible breakwater-double arc plate composite structure was proposed, and a numerical model of the interaction between the wave and the structure was established based on OpenFOAM. The test results were used to verify the constructed numerical model. On this basis, the wave elimination characteristics, the pressure wave distribution characteristics and the influencing factors of wave forces on the new structure were analyzed.The results show that the transmission coefficient decreases with the increase of the relative plate width, while the reflection coefficient is the opposite. The transmission and reflection coefficients vary significantly with relative depth. When the structure is above the static water level (relative submergence is -0.05), the transmission coefficient is the smallest and the reflection coefficient is the largest; When the structure is located below the static water level (relative submergence is 0.05), the transmission coefficient is the largest and the reflection coefficient is the smallest. The positive and negative pressure changes on the upper and lower surfaces of the two arc plates of the composite structure are approximately symmetrical about the horizontal axis, and the pressure values at different measuring points are significantly different. The variation trend of horizontal wave force is similar to that of vertical wave force, but the vertical wave force is much greater than the horizontal wave force. The research results can provide theoretical guidance and technical support for its engineering application.