Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR027369 |
Integration of submerged aquatic vegetation motion within hydrodynamic models | |
K. Nakayama; T. Shintani; K. Komai; Y. Nakagawa; J. W. Tsai; D. Sasaki; K. Tada; H. Moki; T. Kuwae; K. Watanabe; M. R. Hipsey | |
2020-08-03 | |
发表期刊 | Water Resources Research |
出版年 | 2020 |
英文摘要 | Aquatic models used for both freshwater and marine systems frequently need to account for submerged aquatic vegetation (SAV) due to its influence on flow and water quality. Despite its importance, parameterizations are generally adopted that simplify feedbacks from SAV, such as canopy properties (e.g., considering the deflected vegetation height) and the bulk friction coefficient. This study reports the development of a fine‐scale non‐hydrostatic model that demonstrates the two‐way effects of SAV motion interaction with the flow. An object‐oriented approach is applied to capture the multiphase phenomena, whereby a leaf‐scale SAV model based on a discrete element method is combined with a flow‐dynamics model to resolve stresses from currents and waves. The model is verified through application to a laboratory‐scale seagrass bed. A force balance analysis revealed that leaf elasticity and buoyancy are the most significant components influencing the horizontal and vertical momentum equations, respectively. The sensitivity of canopy‐scale bulk friction coefficients to water depth, current speeds and vegetation density of seagrass was explored. Deeper water was also shown to lead to a smaller decrease in vegetation height. The model approach can contribute to improving assessment of processes influencing water quality, sediment stabilization, carbon sequestration and SAV restoration, thereby supporting an understanding of how waterways and coasts will respond to changes brought about by development and a changing climate. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/287770 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | K. Nakayama,T. Shintani,K. Komai,et al. Integration of submerged aquatic vegetation motion within hydrodynamic models[J]. Water Resources Research,2020. |
APA | K. Nakayama.,T. Shintani.,K. Komai.,Y. Nakagawa.,J. W. Tsai.,...&M. R. Hipsey.(2020).Integration of submerged aquatic vegetation motion within hydrodynamic models.Water Resources Research. |
MLA | K. Nakayama,et al."Integration of submerged aquatic vegetation motion within hydrodynamic models".Water Resources Research (2020). |
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