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

Autor: Park Inhwan, Seong Hoje, Kim Hyung-jun, Rhee Dong Sop
Jazyk: English<br />French
Rok vydání: 2018
Předmět:
Zdroj: E3S Web of Conferences, Vol 40, p 05034 (2018)
Druh dokumentu: article
ISSN: 2267-1242
DOI: 10.1051/e3sconf/20184005034
Popis: 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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