From Bore-Soliton-Splash to a New Wave-to-Wire Wave-Energy Model
From Bore-Soliton-Splash to a New Wave-to-Wire Wave-Energy Model
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从孔孤子飞溅到新的波到线波能模型
DOI：
10.1007/s42286-019-00022-9
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Bokhove O
中科院分区：
文献类型：
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作者：
Bokhove O
我们探讨极端的非线性水波放大收缩或类似的，波放大横渡大海。后一种情况可能导致海上极端或流氓波的形成。首先，放大孤立的水波化合物运行到一个收缩传播实验中的波槽。在我们的孔孤子飞溅观察到的最大放大约十倍。随后，我们总结了一些非线性和数值模拟方法，验证放大，收缩波。观察到的这些放大现象使我们开发了一种新型的波能装置，其在收缩中具有波放大作用，用于增强波激活浮标运动和磁感应能量产生。一个实验证明的原则表明，我们的波能装置的工作。最重要的是，我们开发了一种新的波线数学模型相结合的波浪流体动力学，波激活浮标运动和发电的磁感应，从第一原理，满足一个大的变分原理在其保守的限制。波浪和浮标动力学耦合通过一个拉格朗日乘子，在水线的边界值是在一个微妙的方式明确地解决了施加在弱意义上的不可压缩性。后验添加了耗散特征，例如电线电阻和非线性LED负载。新的也是复杂的和兼容的有限元时空离散化的线性动力学，保证数值稳定性和正确的能量转移之间的三个子系统。我们的简化和线性化的波能模型的初步模拟是令人鼓舞的，并涉及第一次研究的共振行为和参数依赖的设备。
We explore extreme nonlinear water-wave amplification in a contraction or, analogously, wave amplification in crossing seas. The latter case can lead to extreme or rogue-wave formation at sea. First, amplification of a solitary-water-wave compound running into a contraction is disseminated experimentally in a wave tank. Maximum amplification in our bore–soliton–splash observed is circa tenfold. Subsequently, we summarise some nonlinear and numerical modelling approaches, validated for amplifying, contracting waves. These amplification phenomena observed have led us to develop a novel wave-energy device with wave amplification in a contraction used to enhance wave-activated buoy motion and magnetically induced energy generation. An experimental proof-of-principle shows that our wave-energy device works. Most importantly, we develop a novel wave-to-wire mathematical model of the combined wave hydrodynamics, wave-activated buoy motion and electric power generation by magnetic induction, from first principles, satisfying one grand variational principle in its conservative limit. Wave and buoy dynamics are coupled via a Lagrange multiplier, which boundary value at the waterline is in a subtle way solved explicitly by imposing incompressibility in a weak sense. Dissipative features, such as electrical wire resistance and nonlinear LED loads, are added a posteriori. New is also the intricate and compatible finite-element space–time discretisation of the linearised dynamics, guaranteeing numerical stability and the correct energy transfer between the three subsystems. Preliminary simulations of our simplified and linearised wave-energy model are encouraging and involve a first study of the resonant behaviour and parameter dependence of the device.