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http://dx.doi.org/10.3741/JKWRA.2021.54.7.495

Modeling 2D residence time distributions of pollutants in natural rivers using RAMS+  

Kim, Jun Song (Korea Research Institute for Human Settlements)
Seo, Il Won (Department of Civil and Environmental Engineering, Seoul National University)
Shin, Jaehyun (Korea Institute of Civil Engineering and Building Technology)
Jung, Sung Hyun (Department of Civil and Environmental Engineering, Seoul National University)
Yun, Se Hun (Department of Civil and Environmental Engineering, Seoul National University)
Publication Information
Journal of Korea Water Resources Association / v.54, no.7, 2021 , pp. 495-507 More about this Journal
Abstract
With the recent industrial development, accidental pollution in riverine environments has frequently occurred. It is thus necessary to simulate pollutant transport and dispersion using water quality models for predicting pollutant residence times. In this study, we conducted a field experiment in a meandering reach of the Sum River, South Korea, to validate the field applicability and prediction accuracy of RAMS+ (River Analysis and Modeling System+), which is a two-dimensional (2D) stream flow/water quality analysis program. As a result of the simulation, the flow analysis model HDM-2Di and the water quality analysis model CTM-2D-TX accurately simulated the 2D flow characteristics, and transport and mixing behaviors of the pollutant tracer, respectively. In particular, CTM-2D-TX adequately reproduced the elongation of the pollutant cloud, caused by the storage effect associated with local low-velocity zones. Furthermore, the transport model effectively simulated the secondary flow-driven lateral mixing at the meander bend via 2D dispersion coefficients. We calculated the residence time for the critical concentration, and it was elucidated that the calculated residence times are spatially heterogeneous, even in the channel-width direction. The findings of this study suggest that the 2D water quality model could be the accidental pollution analysis tool more efficient and accurate than one-dimensional models, which cannot produce the 2D information such as the 2D residence time distribution.
Keywords
Water quality modeling; RAMS+; 2D numerical model; River flow; Pollutant mixing; Residence time distribution;
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1 Kim, S.E., Lee, S., Kim, D., and Song, C.G. (2018c). "Stormwater inundation analysis in small and medium cities for the climate change using EPA-SWMM and HDM-2D." Journal of Coastal Research, No. 85, pp. 991-995.   DOI
2 Choi, S.Y., Seo, I.W., and Kim, Y.O. (2020). "Parameter uncertainty estimation of transient storage model using bayesian inference with formal likelihood based on breakthrough curve segmentation." Environmental Modelling & Software, Vol. 123, p. 104558.   DOI
3 Alavian, V. (1986). "Dispersion tensor in rotating flows." Journal of Hydraulic Engineering, Vol. 112, No. 8, pp. 771-777.   DOI
4 Baek, K.O., and Seo, I.W. (2010), "Routing procedures for observed dispersion coefficients in two-dimensional river mixing." Advances in Water Resources, Vol. 33, No. 12, pp. 1551-1559.   DOI
5 Baek, K.O., Seo, I.W., and Jung, S.J. (2006), "Evaluation of dispersion coefficients in meandering channels from transient tracer tests." Journal of Hydraulic Engineering, Vol. 132, No. 10, pp. 1021-1032.   DOI
6 Brooks, A.N., and Hughes, T.J.R. (1982). "Streamline upwind/PetrovGalerkin formulations for convection dominated flows with particular emphasis on the incompressible Navier-Stokes equations." Computer Methods in Applied Mechanics and Engineering, Vol. 32, No. 1-3, pp. 199-259.   DOI
7 Cox, B.A. (2003). "A review of currently available in-stream waterquality models and their applicability for simulating dissolved oxygen in lowland rivers." Science of the Total Environment, Vol. 314, pp. 335-377.   DOI
8 Hamrick, J.M., and Mills, W.B. (2000). "Analysis of water temperatures in Conowingo Pond as influenced by the Peach Bottom atomic power plant thermal discharge." Environmental Science & Policy, Vol. 3, pp. 197-209.   DOI
9 Jung, S.H., Seo, I.W., Kim, Y.D., and Park, I. (2019). "Feasibility of velocity-based method for transverse mixing coefficients in river mixing analysis". Journal of Hydraulic Engineering, Vol. 145, No. 11. p. 04019040.   DOI
10 Kim, J.S., Seo, I.W., and Baek, D. (2018a), "Modeling spatial variability of harmful algal bloom in regulated rivers using a depth-averaged 2D numerical model," Journal of Hydroenvironment Research, Vol. 20, pp. 63-76.
11 Kim, J.S., Baek, D., Seo, I.W., and Shin, J. (2019). "Retrieving shallow stream bathymetry from UAV-assisted RGB imagery using a geospatial regression method." Geomorphology, Vol. 341, pp. 102-114.   DOI
12 Lee, M.E., and Seo, I.W. (2013), "Spatially variable dispersion coefficients in meandering channels," Journal of Hydraulic Engineering, Vol. 139, No. 2, pp. 141-153.   DOI
13 Lee, M.E., and Seo, I.W. (2010), "2D finite element pollutant transport model for accidental mass release in Rivers," KSCE Journal of Civil Engineering, Vol. 14, No. 1, pp. 77-86.   DOI
14 Kim, J.S., Seo, I.W., Baek, D., and Kang, P.K. (2020). "Recirculating flow-induced anomalous transport in meandering open-channel flows." Advances in Water Resources, Vol. 141, p. 103603.   DOI
15 Kim, J.S., Seo, I.W., Lyu, S., and Kwak, S. (2018b). "Modeling water temperature effect on diatom (Stephanodiscus hantzschii) prediction in Eutropic Rivers using a 2D contaminant transport model," Journal of Hydro-environment Research, Vol. 19, pp. 41-55.
16 Lee, M.E., and Seo, I.W. (2007). "Analysis of pollutant transport in the Han River with tidal current using a 2D finite element model," Journal of Hydro-environment Research, Vol. 1, No. 1, pp. 30-42.
17 Mun, H.S., Jang, J.H., Ryu, I.G., and Kim, J.Y. (2012). "Development of web based realtime water pollution accident response management system in rivers." Journal of Korean Society of Hazard Mitigation, Vol. 12, No. 2, pp. 145-150.   DOI
18 Rutherford, J.C. (1994), River Mixing, John Wiley, New York, U.S.
19 Park, I., and Seo, I.W. (2018). "Modeling non-Fickian pollutant mixing in open channel flows using two-dimensional particle dispersion model." Advances in Water Resources, Vol. 111, pp. 105-120.   DOI
20 Park, I., and Song, C.G. (2018). "Analysis of two-dimensional flow and pollutant transport induced by tidal currents in the Han River." Journal of Hydroinformatics, Vol. 20, No. 3, pp. 551-563.   DOI
21 Samuels, W.B., Amstutz, D.E., Bahadur, R., and Ziemniak, C. (2013). "Development of a global oil spill modeling system." Earth Science Research, Vol. 2, No. 2, p. 52.
22 Seo, I.W., and Song, C.G. (2012), "Numerical simulation of laminar flow past a circular cylinder with slip conditions," International Journal for Numerical Methods in Fluids, Vol. 68, No. 12, pp. 1538-1560.   DOI
23 Seo, I.W., Choi, H.J., Kim, Y.D., and Han, E.J. (2016), "Analysis of two-dimensional mixing in natural streams based on transient tracer tests." Journal of Hydraulic Engineering, Vol. 142, No. 8, p. 04016020.   DOI
24 Song, C.G., Ku, T.G., Kim, Y.D., and Park, Y.S. (2017). "Floodplain stability indices for sustainable waterfront development by spatial identification of erosion and deposition." Sustainability, Vol. 9, No. 5, p. 735.   DOI
25 Song, C.G., Seo, I.W., and Kim, Y.D. (2012), "Analysis of secondary current effect in the modeling of shallow flow in open channels," Advances in Water Resources, Vol. 41, pp. 29-48.   DOI
26 Seo, I.W., Lee, M.E., and Baek, K.O. (2008), "2D modeling of heterogeneous dispersion in meandering channels," Journal of Hydraulic Engineering, Vol. 134, No. 2, pp. 196-204.   DOI
27 Nordin Jr, C.F., and Troutman, B.M. (1980). "Longitudinal dispersion in rivers: The persistence of skewness in observed data." Water Resources Research, Vo. 16, No. 1, pp. 123-128.   DOI
28 Runkel, R.L. (1998). One-dimensional transport with inflow and storage (OTIS): A solute transport model for streams and rivers. US Department of the Interior, US Geological Survey. Vol. 98, No. 4018, U.S.
29 Seo, I.W., and Song, C.G. (2010), "Specification of wall boundary conditions and transverse velocity profile conditions in finite element modeling," Journal of Hydrodynamics, Vol. 22, No. 5, pp. 633-638.   DOI
30 Van Mazijk, A. (2002). "Modelling the effects of groyne fields on the transport of dissolved matter within the Rhine Alarm-Model." Journal of Hydrology, Vol. 264, No. 1-4, pp. 213-229.   DOI
31 Yotsukura, N., and Sayre, W.W. (1976). "Transverse mixing in natural channels." Water Resources Research, Vol. 12, No. 4, pp. 695-704.   DOI