Modelling and Analysis of Hydrodynamics and Water Quality for Rivers in the Northern Cold Region of China
In this study, the Mudan River, which is the most typical river in the northern cold region of China was selected as the research object; Environmental Fluid Dynamics Code (EFDC) was adopted to construct a new two-dimensional water quality model for the urban sections of the Mudan River, and concent...
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ftmdpi:oai:mdpi.com:/1660-4601/13/4/408/ 2023-08-20T04:07:16+02:00 Modelling and Analysis of Hydrodynamics and Water Quality for Rivers in the Northern Cold Region of China Gula Tang Yunqiang Zhu Guozheng Wu Jing Li Zhao-Liang Li Jiulin Sun agris 2016-04-08 application/pdf https://doi.org/10.3390/ijerph13040408 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/ijerph13040408 https://creativecommons.org/licenses/by/4.0/ International Journal of Environmental Research and Public Health; Volume 13; Issue 4; Pages: 408 cold region hydrodynamic water quality model numerical simulation Text 2016 ftmdpi https://doi.org/10.3390/ijerph13040408 2023-07-31T20:52:12Z In this study, the Mudan River, which is the most typical river in the northern cold region of China was selected as the research object; Environmental Fluid Dynamics Code (EFDC) was adopted to construct a new two-dimensional water quality model for the urban sections of the Mudan River, and concentrations of CODCr and NH3N during ice-covered and open-water periods were simulated and analyzed. Results indicated that roughness coefficient and comprehensive pollutant decay rate were significantly different in those periods. To be specific, the roughness coefficient in the ice-covered period was larger than that of the open-water period, while the decay rate within the former period was smaller than that in the latter. In addition, according to the analysis of the simulated results, the main reasons for the decay rate reduction during the ice-covered period are temperature drop, upstream inflow decrease and ice layer cover; among them, ice sheet is the major contributor of roughness increase. These aspects were discussed in more detail in this work. The model could be generalized to hydrodynamic water quality process simulation researches on rivers in other cold regions as well. Text Ice Sheet MDPI Open Access Publishing International Journal of Environmental Research and Public Health 13 4 408 |
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Open Polar |
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MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
cold region hydrodynamic water quality model numerical simulation |
spellingShingle |
cold region hydrodynamic water quality model numerical simulation Gula Tang Yunqiang Zhu Guozheng Wu Jing Li Zhao-Liang Li Jiulin Sun Modelling and Analysis of Hydrodynamics and Water Quality for Rivers in the Northern Cold Region of China |
topic_facet |
cold region hydrodynamic water quality model numerical simulation |
description |
In this study, the Mudan River, which is the most typical river in the northern cold region of China was selected as the research object; Environmental Fluid Dynamics Code (EFDC) was adopted to construct a new two-dimensional water quality model for the urban sections of the Mudan River, and concentrations of CODCr and NH3N during ice-covered and open-water periods were simulated and analyzed. Results indicated that roughness coefficient and comprehensive pollutant decay rate were significantly different in those periods. To be specific, the roughness coefficient in the ice-covered period was larger than that of the open-water period, while the decay rate within the former period was smaller than that in the latter. In addition, according to the analysis of the simulated results, the main reasons for the decay rate reduction during the ice-covered period are temperature drop, upstream inflow decrease and ice layer cover; among them, ice sheet is the major contributor of roughness increase. These aspects were discussed in more detail in this work. The model could be generalized to hydrodynamic water quality process simulation researches on rivers in other cold regions as well. |
format |
Text |
author |
Gula Tang Yunqiang Zhu Guozheng Wu Jing Li Zhao-Liang Li Jiulin Sun |
author_facet |
Gula Tang Yunqiang Zhu Guozheng Wu Jing Li Zhao-Liang Li Jiulin Sun |
author_sort |
Gula Tang |
title |
Modelling and Analysis of Hydrodynamics and Water Quality for Rivers in the Northern Cold Region of China |
title_short |
Modelling and Analysis of Hydrodynamics and Water Quality for Rivers in the Northern Cold Region of China |
title_full |
Modelling and Analysis of Hydrodynamics and Water Quality for Rivers in the Northern Cold Region of China |
title_fullStr |
Modelling and Analysis of Hydrodynamics and Water Quality for Rivers in the Northern Cold Region of China |
title_full_unstemmed |
Modelling and Analysis of Hydrodynamics and Water Quality for Rivers in the Northern Cold Region of China |
title_sort |
modelling and analysis of hydrodynamics and water quality for rivers in the northern cold region of china |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2016 |
url |
https://doi.org/10.3390/ijerph13040408 |
op_coverage |
agris |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
International Journal of Environmental Research and Public Health; Volume 13; Issue 4; Pages: 408 |
op_relation |
https://dx.doi.org/10.3390/ijerph13040408 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/ijerph13040408 |
container_title |
International Journal of Environmental Research and Public Health |
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13 |
container_issue |
4 |
container_start_page |
408 |
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1774718764554649600 |