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- Title
规则波作用下刚性挺水植物波生流试验研究.
- Authors
陈杰; 姚震; 蒋昌波; 曾思益; 陈克伦
- Abstract
To understand the variation of the wave-induced current for emergent rigid vegetation,a series of laboratory experiments were conducted in a wave flume with two water depths,a variety of regular wave conditions,and two emergent plants modes. Based on the hypothesis testing,the predicting models for the canopy-drag length and the characteristic vegetation parameters were established respectively. The results showed that the current is predominantly induced by the root when the stem density was 60 plants/m2. Based on this observation,a model for predicting the maximum temporal-averaged flow for emergent vegetation was proposed by the extension of the existing model derived from submerged vegetation. The stem can reduce the root-mean-square of the mean current,the relative reduction constant at and above the root was a parabolic function of Ursell number. In the distribution of cluster roots,the stem had a stabilizing influence on the vertical velocity structure,especially at the normalized vertical position corresponding to the maximum of the temporal-averaged flow velocity.
- Subjects
FLUMES; VELOCITY; HYPOTHESIS; DENSITY; FORECASTING
- Publication
Advances in Water Science / Shuikexue Jinzhan, 2021, Vol 32, Issue 3, p438
- ISSN
1001-6791
- Publication type
Article
- DOI
10.14042/j.cnki.32.1309.2021.03.012