Diagnostic Curve for Estimating Soil Dispersivity and Instantaneously Injected Mass
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VIEW THE REPLYPublication: Journal of Irrigation and Drainage Engineering
Volume 132, Issue 3
Abstract
A diagnostic curve is developed for identification of dispersivity and injected mass in case of homogeneous and isotropic soil. The exit concentration from a soil column experiment is diagnostically plotted and matched to the diagnostic curve to yield the estimates of dispersivity and injected mass. A changed value of dispersivity can be identified during increasing versus decreasing concentrations. The new method is applicable for any value of the Péclet number or specific dispersivity. An estimate of the injected mass would be helpful in assessing the pollutant load from a point source. Thus, the new method would be useful for field application.
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References
Ogata, A., and Banks, R. B. (1961). “A solution of differential equation of longitudinal dispersion in porous media.” Professional Paper 441-A, U.S. Geological Survey, U.S. Dept. of the Interior, Washington, D.C.
Wang, H. Q., Crampon, N., Huberson, S., and Garnier, J. M. (1987). “A linear graphical method for determining hydrodispersive characteristics in tracer experiments with instantaneous injection.” J. Hydrol., 95(1/2), 143–154.
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Published In
Journal of Irrigation and Drainage Engineering
Volume 132 • Issue 3 • June 2006
Pages: 281 - 283
Copyright
© 2006 ASCE.
History
Received: Nov 2, 2004
Accepted: May 3, 2005
Published online: Jun 1, 2006
Published in print: Jun 2006
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