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Paper Information

Journal:   IRANIAN JOURNAL OF SOIL AND WATER RESEARCH   WINTER 2016 , Volume 46 , Number 4; Page(s) 653 To 662.
 
Paper: 

DETERMINATION OF LONGITUDINAL DISPERSION COEFFICIENT INVOLVING TRACER EXPERIMENT DATA

 
 
Author(s):  MOHAMMADI GHALENI MEHDI, EBRAHIMI KUMARS*, OMID MOHAMMAD HOSEIN
 
* DEPARTMENT OF IRRIGATION AND RECLAMATION ENGINEERING, UNIVERSITY OF TEHRAN, KARAJ, IRAN
 
Abstract: 

Longitudinal dispersion coefficient is normally affected by many hydraulic parameters. So far three approaches namely, integral method, dye tracing filed measurements and empirical formulae have been widely employed to estimate the above mentioned coefficient in rivers and streams. In this paper a new equation of the longitudinal dispersion coefficient is devised and evaluated using an environmentally safe tracer plus the basic empirical equations. To achieve the aim, a length of 500 meters of a manmade concrete canal was chosen, to be used in carrying out the tracer tests. A set of experiments were conducted in Feb.2015, within three different mixing lengths, of: 45, 75 and 100 meters. The results show that differences of average, variance and maximum concentration between the measured vs estimated data using the lastly available equation) are equal to 79, 6, and 99 mg/lit while using the newly equation found in the present study they are respectively equal to 66, -1 and 44 mg/lit.

 
Keyword(s): EMPIRICAL EQUATION, HYDRAULIC PARAMETERS, MIXING LENGTH, TRACER
 
 
References: 
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Citations: 
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+ Click to Cite.
APA: Copy

MOHAMMADI GHALENI, M., & EBRAHIMI, K., & OMID, M. (2016). DETERMINATION OF LONGITUDINAL DISPERSION COEFFICIENT INVOLVING TRACER EXPERIMENT DATA. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, 46(4), 653-662. https://www.sid.ir/en/journal/ViewPaper.aspx?id=511597



Vancouver: Copy

MOHAMMADI GHALENI MEHDI, EBRAHIMI KUMARS, OMID MOHAMMAD HOSEIN. DETERMINATION OF LONGITUDINAL DISPERSION COEFFICIENT INVOLVING TRACER EXPERIMENT DATA. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH. 2016 [cited 2021July28];46(4):653-662. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=511597



IEEE: Copy

MOHAMMADI GHALENI, M., EBRAHIMI, K., OMID, M., 2016. DETERMINATION OF LONGITUDINAL DISPERSION COEFFICIENT INVOLVING TRACER EXPERIMENT DATA. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, [online] 46(4), pp.653-662. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=511597.



 
 
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