American Society of Civil Engineers


Rapid Graphical Detection of Weakness Problems in Numerical Simulation Infiltration Models Using a Linearized Form Equation


by John D. Valiantzas, (Professor, Division of Water Resources Management, Dept. of Natural Resources and Agricultural Engineering, Agricultural Univ. of Athens, 75 Iera Odos, 11855, Athens, Greece. E-mail: lhyd2vay@aua.gr), E. D. Pollalis, (corresponding author), (Ph.D. Candidate, Division of Water Resources Management, Dept. of Natural Resources and Agricultural Engineering, Agricultural Univ. of Athens, 75 Iera Odos, 11855, Athens, Greece E-mail: lhyd4poe@aua.gr), K. X. Soulis, Ph.D., (Postdoctoral Research, Division of Water Resources Management, Dept. of Natural Resources and Agricultural Engineering, Agricultural Univ. of Athens, 75 Iera Odos, 11855, Athens, Greece. E-mail: soco@aua.gr), and P. A. Londra, Ph.D., (Postdoctoral Research, Division of Water Resources Management, Dept. of Natural Resources and Agricultural Engineering, Agricultural Univ. of Athens, 75 Iera Odos, 11855, Athens, Greece. E-mail: v.londra@aua.gr)

Journal of Irrigation and Drainage Engineering, Vol. 137, No. 8, August 2011, pp. 524-529, (doi:  http://dx.doi.org/10.1061/(ASCE)IR.1943-4774.0000318)

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Document type: Journal Paper
Abstract: Recently, Valiantzas proposed a new two-parameter vertical infiltration equation that can be transformed to a linearized-form equation that essentially states that the shape of the cumulative infiltration data, when presented in the form of (i2/t) versus i, is linear. In this paper, the presentation of the numerical data to the Valiantzas linearized-form equation is proposed as an additional criterion to detect easily and rapidly possible errors of the numerical solutions and eventually to choose the best spatial discretization for a simulated infiltration event that is used as setup parameter to the numerical infiltration models. Numerical data and analytical solutions were used to validate the proposed method.


ASCE Subject Headings:
Infiltration
Numerical models
Analytical techniques

Author Keywords:
Infiltration
Numerical model
Analytical solutions