流增强了海草的波浪减弱,在波浪电流的组合流动中
Davide Vettori1, Francesco Giordana1, Costantino Manes1
1Department of Environmental, Land and Infrastructure Engineering, Politecnico di Torino, Torino 10129, Italy.
概括
海草通过减少波浪能量来保护海岸. 这项研究表明,虽然阻力很重要,但电流的流对波浪减弱产生了重大影响,因此需要新的模型来准确地预测海岸保护.
科学领域:
- 沿海工程的工程.
- 海洋生态海洋生态学
- 流体动力学 流体动力学
背景情况:
- 海草对于海岸保护至关重要,有效地减弱波浪.
- 现有的模型主要针对纯波条件下的波衰减.
- 电流对海草波弱化的影响仍然未得到充分研究.
研究的目的:
- 在波浪和电流条件的组合下,量化海草天窗所造成的波浪衰减.
- 在这些复杂的场景中确定影响波弱化的关键因素.
- 为沿海保护应用开发一种改进的建模方法.
主要方法:
- 使用动态缩放的海草模仿实验室水流的实验.
- 波浪特性,电流速度,水深和植物密度的系统变化.
- 分析了300多个实验运行,构建了同类最大的数据集.
主要成果:
- 植被阻力模型在许多条件下准确地预测波浪衰减.
- 模型系统地低于预测衰减,当天花板电流流是显著的.
- 一个新的非维度参数有效量化了流和阻力之间的相互作用.
结论:
- 海草对波浪的减弱受阻力和流的影响.
- 针对沿海应用,提出了一种新的基于物理的模型,该模型包含流.
- 准确预测海草在海岸保护中的有效性需要考虑电流诱导的流.
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