Experimental investigation and evaluation results of numerical simulation and analytical solution of classical ade for conservative solutes

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Azhdan Yaghoub; EMADI ALIREZA; Chabokpour Jafar; DANESHFARAZ RASOUL

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Journal: JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION Year:2019 | Volume:8 | Issue:2 Page(s): 39-55

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Title

Experimental investigation and evaluation results of numerical simulation and analytical solution of classical ade for conservative solutes

Author(s)

Azhdan Yaghoub | EMADI ALIREZA | Chabokpour Jafar | DANESHFARAZ RASOUL | Issue Writer Certificate

Keywords

Breakthrough CurveQ1

Longitudinal Dispersion CoefficientQ1

OTISQ1

Solute TransportQ1

Abstract

The Longitudinal Dispersion Coefficient from the perspective of public safety and human health, is one of the important parameters for predicting and characterizing the transport of pollution in rivers and shallow waters. This paper aimed at investigating the efficiency of the classical advection-dispersion Equation for predicting transport of pollution in a gravel bed rivers. Some tracer experiments were done in a flume with longitudinal slopes of (S= 0. 001, 0. 007) and five discharges include of (7. 5, 11. 5, 15. 5, 20. 5, 25. 5) lit/sec. Simulated (OTIS) and analytical Breakthrough Curves were compared with observed data. The results of this study indicated that advection-dispersion equation in prediction of tailing edge of Breakthrough Curve has less accuracy. So it not be used in rivers with storage area but it is very helpful to estimate initial value of Longitudinal Dispersion Coefficient. The calculated dispersion coefficient increased with augmentation distance from the injection site. The domain of estimated dispersion coefficient for the tracer test of this research is between (0. 0073-0. 18) m2/sec. the results of calculating travel time parameters from experimental BT curves showed an exponential relationship between them and the distance from the injection site. Finally, using a geometric, hydraulic, and tracer test data and applying a Buckingham π ۥ theorem a new equation was developed to predict the Longitudinal Dispersion Coefficient. The relative error and normalized root mean square error for the proposed equation were calculated respectively 24% and 1. 37.

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APA: Copy

Azhdan, Yaghoub, EMADI, ALIREZA, Chabokpour, Jafar, & DANESHFARAZ, RASOUL. (2019). Experimental investigation and evaluation results of numerical simulation and analytical solution of classical ade for conservative solutes. JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION, 8(2 ), 39-55. SID. https://sid.ir/paper/232171/en

Vancouver: Copy

Azhdan Yaghoub, EMADI ALIREZA, Chabokpour Jafar, DANESHFARAZ RASOUL. Experimental investigation and evaluation results of numerical simulation and analytical solution of classical ade for conservative solutes. JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION[Internet]. 2019;8(2 ):39-55. Available from: https://sid.ir/paper/232171/en

IEEE: Copy

Yaghoub Azhdan, ALIREZA EMADI, Jafar Chabokpour, and RASOUL DANESHFARAZ, “Experimental investigation and evaluation results of numerical simulation and analytical solution of classical ade for conservative solutes,” JOURNAL OF WATER AND SOIL RESOURCES CONSERVATION, vol. 8, no. 2 , pp. 39–55, 2019, [Online]. Available: https://sid.ir/paper/232171/en

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