Longitudinal Dispersion Coefficients for Streams

by Subhash C. Jain, (A.M.ASCE), Asst. Prof.; Energy Engrg., and Research Engr., Institute of Hydraulic Research, Univ. of Iowa, Iowa City, Iowa,

Serial Information: Journal of the Environmental Engineering Division, 1976, Vol. 102, Issue 2, Pg. 465-474

Document Type: Journal Paper


A simplified method is presented to predict the longitudinal dispersion coefficient for natural streams. A dimensionless parameter, β, which is the function of the shape of the channel cross section only, is defined. An expression for β for idealized tetragonal cross section is derived. The method is useful in cases where the time and cost limitations do not permit any elaborate field tests.

Subject Headings: Rivers and streams | Cross sections | Field tests | Parameters (statistics) | Permits

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