Estimation of the Longitudinal Dispersion Coefficient using the Dimensional Analysis in Surface Water Flows

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MOHAMMADI GHALENI MEHDI; EBRAHIMI KUMARS; OMID MOHAMMAD HOSSEIN

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Paper Information

Journal: Iranian Journal of Soil and Water Research Year:2017 | Volume:48 | Issue:4 Page(s): 759-769

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Title

Estimation of the Longitudinal Dispersion Coefficient using the Dimensional Analysis in Surface Water Flows

Author(s)

MOHAMMADI GHALENI MEHDI | EBRAHIMI KUMARS | OMID MOHAMMAD HOSSEIN | Issue Writer Certificate

Keywords

Empirical equationsQ1

EstimationQ1

Pollution advectionQ1

RiverQ1

Surface water streamsQ1

Abstract

Longitudinal dispersion coefficient is amongst the most important needed parameters for the solution of the advection-dispersion equation. In the present paper a new equation for predicting the longitudinal dispersion coefficient in Surface water streams is presented. To archive the aim, a collection of 176 sets of recorded field data from different canals and Rivers were employed, involving dimensional analysis. The performance of the new equation was compared with a number of 18 selected ones of the well-known Empirical equations, using the above mentioned data. The results indicated that the new equation was twice in precision, in comparison with to the other equations. In other words, the calculated average percentage error between the predicted vs recorded data for the proposed new equation was less than ± 100 percent. Also, the mean absolute error and root mean square for the new equation were obtained as equal to 0. 34 and 0. 03, respectively, which are less than those in the other equations.

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APA: Copy

MOHAMMADI GHALENI, MEHDI, EBRAHIMI, KUMARS, & OMID, MOHAMMAD HOSSEIN. (2017). Estimation of the Longitudinal Dispersion Coefficient using the Dimensional Analysis in Surface Water Flows. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, 48(4 ), 759-769. SID. https://sid.ir/paper/225706/en

Vancouver: Copy

MOHAMMADI GHALENI MEHDI, EBRAHIMI KUMARS, OMID MOHAMMAD HOSSEIN. Estimation of the Longitudinal Dispersion Coefficient using the Dimensional Analysis in Surface Water Flows. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH[Internet]. 2017;48(4 ):759-769. Available from: https://sid.ir/paper/225706/en

IEEE: Copy

MEHDI MOHAMMADI GHALENI, KUMARS EBRAHIMI, and MOHAMMAD HOSSEIN OMID, “Estimation of the Longitudinal Dispersion Coefficient using the Dimensional Analysis in Surface Water Flows,” IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, vol. 48, no. 4 , pp. 759–769, 2017, [Online]. Available: https://sid.ir/paper/225706/en

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