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首页> 外文期刊>Zeitschrift fur Arznei- und Gewurzpflanzen >Fully nonlinear simulation of wave-current interaction with an oscillating wave surge converter
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Fully nonlinear simulation of wave-current interaction with an oscillating wave surge converter

机译：振动波浪浪涌变换器的波电流交互的完全非线性模拟

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摘要

On the basis of a time-domain HOBEM (higher-order boundary element method), a two-dimensional (2D) fully nonlinear numerical model is developed to investigate the wave energy capturing efficiency of an OWSC (oscillating wave surge converter) in the presence of uniform currents. In the model, the wave energy is extracted through a linear external damping coefficient, and the natural frequency of the OWSC is tuned to the wave characteristics by introducing an elastic and inertia coefficient. On the free surface, a five-point fourth order Lagrangian interpolation method is applied to determine the redistribution of meshes, and a rotation scheme of spatial coordinate system is employed to tackle the discontinuity of flux at the intersection points. The wave loads on the wetted body surface are then evaluated using two auxiliary functions through which the mutual dependence of body motion and fluid flow is decoupled. The present model is validated against the published experimental and numerical results for an OWSC in large motion excited by nonlinear waves. Simulations are performed to capture the hydrodynamic behavior of the OWSC with different currents. Numerical results are also provided to show the behavior dependence on the design parameters, such as current velocities, wave conditions, geometric characteristics and mechanical properties.
机译：基于时域HOBEM（高阶边界元件），开发了一种二维（2D）完全非线性数值模型来研究在存在中的OWSC（振荡波浪涌转换器）的波能量捕获效率均匀的电流。在该模型中，通过线性外部阻尼系数提取波能，通过引入弹性和惯性系数来调谐OWSC的自然频率。在自由表面上，应用五点四阶拉格朗日插值方法来确定网格的再分配，并且采用空间坐标系的旋转方案来解决交叉点处的通量的不连续性。然后使用两个辅助功能评估湿润体表上的波浪载荷，通过该辅助功能，身体运动的相互依赖性和流体流动分离。本模型对由非线性波浪激发的大型运动的公开的实验和数值结果验证。进行模拟以捕获不同电流的OWSC的流体动力学行为。还提供了数值结果以示出对设计参数的行为依赖性，例如当前速度，波条件，几何特性和机械性能。

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