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Journal of Rehabilitation in Civil Engineerin، جلد ۷، شماره ۲، صفحات ۱-۱۰
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عنوان انگلیسی Extraction of model parameters for reactive solute transport
چکیده انگلیسی مقاله In the present study, tried to examine the reactive solute relationships for transport and degradation processes through the rockfill media. By applying the analytical solution of reactive transport, the 1st to 3rd theoretical temporal moments have been extracted then, by using two methods of curve fitting and temporal moment matching, the coefficients of dispersion and degradation have been exploited. Two rock diameter, two operating discharges and five instantly injection mass have been used as the variables of experiments. The EC sensors with operation software were installed inside the rockfill media and then the experimental breakthrough curves with intervals of 4 seconds have been extracted. It is concluded that both methods are suitable for application of transport and degradation processes inside the media. It was observed that by increasing inflow discharges, pore velocity, and media diameters the dispersion coefficient decreases and with a decrease in media diameter or with increase in injection mass the decay rate decreases. The sensitivity analysis on the derived moment equation and also skewness coefficient equation indicated that the velocity and degradation are the most and less effective parameters on the moment equations respectively
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نویسندگان مقاله Jafar Chabokpour |
Civil engineering department, Faculty of engineering

Ali Akhoundzadeh |
Head of river engineering department, East Azarbayjan regional water authority

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