SIMULATION OF TWO-DIMENSIONAL TRANSIENT FLOW TO DRAINAGE DITCHES

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BEHBAHANI S.M.R.; RAHIMI KHOUB A.

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Paper Information

Journal: Journal of Agricultural Sciences and Natural Resources Year:2002 | Volume:9 | Issue:1 Page(s): 161-167

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Title

SIMULATION OF TWO-DIMENSIONAL TRANSIENT FLOW TO DRAINAGE DITCHES

Author(s)

BEHBAHANI S.M.R. | RAHIMI KHOUB A. | Issue Writer Certificate

Keywords

DRAINAGEQ2

WATER TABLEQ2

HYDRAULIC CONDUCTIVITYQ2

MATHEMATICAL MODELQ2

Abstract

The present research suggests a MATHEMATICAL MODEL for predicting WATER TABLE position between two underground DRAINAGE ditches and simulates a transient flow regime after a single event recharge due to rainfall or irrigation. This model solves the two dimensional transient flow equations within the anisotropic soils for unsteady State. The Alternating Direct Implicit (ADI) method is also used to solve numerically flow equation.The results of comparison indicated that the model is correlated with one-dimensional flow in which vertical HYDRAULIC CONDUCTIVITY of soil was ignored (kz/kx<<1) (Glover and Dumm). This model was suited to be used for vertical flow condition within the upper and lower line of DRAINAGE canal. The results showed that in anisotrope soils in which the vertical HYDRAULIC CONDUCTIVITY is considered (kz/kx>1), the use of analytical equation which only horizontal flow towards ditches does not provide a real WATER TABLE prediction.The position of WATER TABLE related to impermeable layer will be overestimated. The position of WATER TABLE in transient flow using two dimensional flow models has more realistic application than that of analytic procedures.

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APA: Copy

BEHBAHANI, S.M.R., & RAHIMI KHOUB, A.. (2002). SIMULATION OF TWO-DIMENSIONAL TRANSIENT FLOW TO DRAINAGE DITCHES. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, 9(1), 161-167. SID. https://sid.ir/paper/9624/en

Vancouver: Copy

BEHBAHANI S.M.R., RAHIMI KHOUB A.. SIMULATION OF TWO-DIMENSIONAL TRANSIENT FLOW TO DRAINAGE DITCHES. JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES[Internet]. 2002;9(1):161-167. Available from: https://sid.ir/paper/9624/en

IEEE: Copy

S.M.R. BEHBAHANI, and A. RAHIMI KHOUB, “SIMULATION OF TWO-DIMENSIONAL TRANSIENT FLOW TO DRAINAGE DITCHES,” JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, vol. 9, no. 1, pp. 161–167, 2002, [Online]. Available: https://sid.ir/paper/9624/en

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