Dynamic criterion for the formation of surface water-blooms | |
Gao Y(高永); Liu QQ(刘青泉) | |
Source Publication | THEORETICAL & APPLIED MECHANICS LETTERS |
2013-07 | |
Volume | 3Issue:4Pages:042003/1-042003/3 |
ISSN | 2095-0349 |
Abstract | Surface water-blooms (SWBs) is usually explained as a buoyant migration of blue-green algae to the water surface under the conditions of reduced turbulence. Wind-induced turbulent mixing can cause considerable heterogeneity in the vertical concentration distribution of algal cells. There exists a criterion below which cell buoyancy can overcome the turbulent mixing. Former researchers regarded a certain wind speed as this criterion, but this wind speed differs in value. In this research, we propose a new criterion, a nondimensional parameter – Entrainment number (En), which represents the ratio of the intrinsic velocity of algal cells relative to the characteristic velocity of wind-induced mixing. Observation in Taihu Lake demonstrates that this new criterion is more suitable for the description of hydrodynamic effect on the formation of surface water-blooms. |
Keyword | Swbs Microcystis Turbulent Mixing Wind Speed Entrainment Number |
Subject Area | 环境流体力学 |
URL | 查看原文 |
Language | 英语 |
Funding Organization | National Natural Science Funds of China for Distinguished Young Scholar (10825211), “Hundred Talents Program” of the Chinese Academy of Sciences, and the National Natural Science Foundation of China(11202217) |
Department | LMFS水环境流体力学(LEM) |
Classification | 二类 |
Ranking | 1 |
Document Type | 期刊论文 |
Identifier | http://dspace.imech.ac.cn/handle/311007/47395 |
Collection | 流固耦合系统力学重点实验室 |
Corresponding Author | Liu QQ(刘青泉) |
Recommended Citation GB/T 7714 | Gao Y,Liu QQ. Dynamic criterion for the formation of surface water-blooms[J]. THEORETICAL & APPLIED MECHANICS LETTERS,2013,3,4,:042003/1-042003/3. |
APA | Gao Y,&Liu QQ.(2013).Dynamic criterion for the formation of surface water-blooms.THEORETICAL & APPLIED MECHANICS LETTERS,3(4),042003/1-042003/3. |
MLA | Gao Y,et al."Dynamic criterion for the formation of surface water-blooms".THEORETICAL & APPLIED MECHANICS LETTERS 3.4(2013):042003/1-042003/3. |
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