A SIMPLE METHOD FOR SIMULTANEOUS PREDICTION OF SATURATED HYDRAULIC CONDUCTIVITY AND DRAINABLE POROSITY

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MOHAMMAD VALI SAMANI J.; HOMAEI M.; KOUCHAKZADEH M.; FATHI P.

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Journal: JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH Year:2005 | Volume:6 | Issue:23 Page(s): 158-158

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Title

A SIMPLE METHOD FOR SIMULTANEOUS PREDICTION OF SATURATED HYDRAULIC CONDUCTIVITY AND DRAINABLE POROSITY

Author(s)

MOHAMMAD VALI SAMANI J. | HOMAEI M. | KOUCHAKZADEH M. | FATHI P. | Issue Writer Certificate

Keywords

DRAINAGEQ3

EFFECTIVE POROSITYQ4

OPTIMIZATIONQ3

SATURATED HYDRAULIC CONDUCTIVITYQ4

Abstract

The SATURATED HYDRAULIC CONDUCTIVITY Ks and the EFFECTIVE POROSITY f are needed for modeling and many applications in DRAINAGE. The current design procedure is based upon calculation of the lateral spacing, using some average values of Ks and f within the area to be drained. The objective of this study was to take into account the spatial and temporal variability of these parameters and to introduce a new method for simultaneous estimation of Ks and f. The proposed method was based upon measuring water table profiles at different times. The an steady model of Glover-Dumm (1954) for predicting water table profiles was used with a nonlinear OPTIMIZATION technique to find the optimum values for Ks and f. Different data sets from the conducted experiments and literatures were used for calibration, using nonlinear OPTIMIZATION technique. A physical DRAINAGE model of 2.2 m length, 0.3 m width and 0.5 m hight was established in the laboratory and carefully packed with a sandy loam soil. A perforated DRAINAGE pipe of 4.5 cm diameter was established at the bottom end of the model. Some 16 piezometers were inserted in the soil for spatial and temporal water table monitoring. The proposed approach was evaluated with both constant and variable f. The pridicted values with new coefficiante showed of the new approach showed good agreement with the measured ones. With variable EFFECTIVE POROSITY the mothed is even much more successful to predict water table profiles.

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APA: Copy

MOHAMMAD VALI SAMANI, J., HOMAEI, M., KOUCHAKZADEH, M., & FATHI, P.. (2005). A SIMPLE METHOD FOR SIMULTANEOUS PREDICTION OF SATURATED HYDRAULIC CONDUCTIVITY AND DRAINABLE POROSITY. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, 6(23), 158-158. SID. https://sid.ir/paper/28265/en

Vancouver: Copy

MOHAMMAD VALI SAMANI J., HOMAEI M., KOUCHAKZADEH M., FATHI P.. A SIMPLE METHOD FOR SIMULTANEOUS PREDICTION OF SATURATED HYDRAULIC CONDUCTIVITY AND DRAINABLE POROSITY. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH[Internet]. 2005;6(23):158-158. Available from: https://sid.ir/paper/28265/en

IEEE: Copy

J. MOHAMMAD VALI SAMANI, M. HOMAEI, M. KOUCHAKZADEH, and P. FATHI, “A SIMPLE METHOD FOR SIMULTANEOUS PREDICTION OF SATURATED HYDRAULIC CONDUCTIVITY AND DRAINABLE POROSITY,” JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, vol. 6, no. 23, pp. 158–158, 2005, [Online]. Available: https://sid.ir/paper/28265/en

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