通过不连续的灵活地毯的人工海草改变波动力学,可以支持海草恢复工作
Raúl Villanueva1, Maike Paul2, Torsten Schlurmann2
1Ludwig Franzius Institute for Hydraulic, Estuarine and Coastal Engineering, Leibniz University Hannover, 30167, Hannover, Germany. villanueva@lufi.uni-hannover.de.
Scientific reports
|November 8, 2023
概括
人工海草 (ASG) 地毯被测试用于海洋恢复. 虽然ASG地毯降低了速度,但它们的灵活性和间距引入了水力动力学不确定性,挑战了当前的预测模型.
科学领域:
- 海洋生物学 海洋生物学
- 沿海工程的工程.
- 水力动力学是指水力动力学.
背景情况:
- 海草的恢复对海洋生态系统至关重要.
- 人工海草 (ASG) 提供了一个潜在的解决方案,但缺乏设计指南.
- 现有的ASG水力动力学知识是基于理想化的固定床场景.
研究的目的:
- 为了分析原型规模的人工海草 (ASG) 地毯的水力动力相互作用.
- 评估ASG地毯在改变水流和波浪传播方面的有效性.
- 评估当前水力动力学模型在现场条件下预测ASG性能的适用性.
主要方法:
- 在各种波浪条件下部署和测试定,原型规模的ASG (子网).
- 测量速度结构和波浪传播在单双布配置周围.
- 实验数据与当代水力动力学模型的预测进行比较.
主要成果:
- 两张ASG地毯将轨道速度降低了高达16%,但整体减速很小.
- 速度在ASG地毯上方增加,地毯之间的间隙增强了流量.
- 波衰变遵循指数式模式,由第二层放大,尽管模型往往高估了衰减.
- 目前的模型在准确捕捉ASG诱导的水力动力学方面存在局限性,特别是使用多个子.
结论:
- 由于ASG的灵活性和间距,引入了当前水力动力学模型无法完全捕捉的复杂性.
- 虽然模型提供了对波衰减的一般见解,但特定的现场条件需要进一步调查.
- 需要进一步的研究来完善ASG设计,并改进用于有效恢复海草的预测建模.
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