Two-dimensional Pollutant Transport Simulations in Natural Streams with Horizontal Recirculation Zone

被引：0
|
作者：
Park, Inhwan [1 ]
Seong, Hoje [1 ]
Kim, Hyung-jun [2 ]
Rhee, Dong Sop [1 ,2 ]
机构：
[1] Korea Inst Civil Engn & Bldg Technol, Hydro Sci & Engn Res Inst, Goyang Si, South Korea
[2] Korea Inst Civil Engn & Bldg Technol, Multi Disaster Countermeasures Org, Goyang Si, South Korea
来源：
NINTH INTERNATIONAL CONFERENCE ON FLUVIAL HYDRAULICS (RIVER FLOW 2018) | 2018年 / 40卷
关键词：
DISPERSION;
D O I：
10.1051/e3sconf/20184005034
中图分类号：
TV21 [水资源调查与水利规划];
学科分类号：
081501 ;
摘要：
In this study, flow and pollutant transport simulations were conducted in the tidal reach of the Han River where the horizontal recirculation zone induced by the tidal cycle causes the storage effect. The flow analysis results show that the flow direction was repeatedly changed due to the downstream water level and the horizontal recirculation zone was occurred at the point where the flow direction was changed. Thus, the pollutant cloud was advected back and forth by the periodically occurred reversal flow. The storage effects of the horizontal recirculation zone cause that the concentration-time curve shows oscillatory increasing patterns, and the retention time of pollutant cloud was also increased.
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页数：7
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