New Results for an Approximate Method for Calculating Two-Dimensional Furrow Infiltration

Bautista, E.; Warrick, A. W.; Strelkoff, Theodor

doi:10.1061/(asce)ir.1943-4774.0000753

Cited by 20 publications

(46 citation statements)

References 29 publications

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“…In the present study, the dispersion component was neglected and only advection was simulated using WinSRFR. The explicit infiltration function of Warrick et al (2007), modified by Bautista et al (2014) and Bautista et al (2016) was used to calculate the flow-depth dependent furrow infiltration. This function has been shown to approximate the solution to the two-dimensional Richards equation reasonably well.…”

Section: Description Of Validation Scenariosmentioning

confidence: 99%

A hybrid finite volume-finite element model for the numerical analysis of furrow irrigation and fertigation

Brunetti

Šimůnek

Bautista

2018

Computers and Electronics in Agriculture

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A B S T R A C TThis study presents a hybrid Finite Volume -Finite Element (FV-FE) model that describes the coupled surfacesubsurface flow processes occurring during furrow irrigation and fertigation. The numerical approach combines a one-dimensional description of water flow and solute transport in an open channel with a two-dimensional description of water flow and solute transport in a subsurface soil domain, thus reducing the dimensionality of the problem and the computational cost. The modeling framework includes the widely used hydrological model, HYDRUS, which can simulate the movement of water and solutes, as well as root water and nutrient uptake in variably-saturated soils. The robustness of the proposed model was examined and confirmed by mesh and time step sensitivity analyses. The model was theoretically validated by comparison with simulations conducted with the well-established model WinSRFR and experimentally validated by comparison with field-measured data from a furrow fertigation experiment conducted in the US.

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Section: Description Of Validation Scenariosmentioning

confidence: 99%

A hybrid finite volume-finite element model for the numerical analysis of furrow irrigation and fertigation

Brunetti

Šimůnek

Bautista

2018

Computers and Electronics in Agriculture

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“…The variable ψ m is estimated by subtracting the hydraulic conductivity from the weighted average of the soil pressure head, and this solution was proposed by Bautista et al [29]. Under ponding water conditions, the cumulative infiltration volume can be written as [28] …”

Section: Ga Modelmentioning

confidence: 99%

“…The soil water characteristic curves and Ks were measured using a soil moisture suction meter (SXY-2, China) and an unsaturated hydraulic conductivity meter (FS-1, China), respectively. The value of ψm was determined using the method of Bautista et al [29] according to the soil water characteristic parameters. Table 1 lists the details of the six laboratory experimental data sets.…”

Section: Laboratory Experimentsmentioning

confidence: 99%

Approximate Explicit Solution to the Green-Ampt Infiltration Model for Estimating Wetting Front Depth

Nie

Fei

2017

Water

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Obtaining reliable information on the wetting front depth of soil is beneficial to the understanding of one-dimensional (1D) vertical infiltration under border irrigation. This paper presents an approximate explicit solution to the Green-Ampt (GA) infiltration model for estimating the wetting front depth. Moreover, the model proposed in this study, the GA model, the Ali model, and the Stone model were validated and evaluated using laboratory experimental data and HYDRUS-1D simulation. Statistical comparisons (root mean square error-RMSE, mean absolute percent relative error-MAPRE, and percent bias-PB) of the estimated data with the measured and simulated data were conducted. The models were ranked on the basis of their overall performance index (OPI). The results demonstrated that all four models can be used to estimate the wetting front depth of 1D vertical infiltration for a wide range of soil textures; the proposed model provided the most accurate result. According to comparisons of the estimated values with the measured and simulated values, the maximum RMSE, MAPRE, and PB were 1.74 cm, 6.92%, and −6.74%, respectively, for the proposed model. On the basis of the OPI, the optimal model was the proposed model, followed by the Ali, GA, and Stone models.

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“…In order to take into account the effect of variable depth of flow along the length of run, the local wetted perimeter option offered by WinSRFR was selected. Under the proposed approach, infiltration could be underestimated since infiltration by absorption is not considered (Fok and Chiang, 1984;Skonard and Martin, 2002;Bautista et al, 2014). For the WinSRFR simulations other option is trapezoidal furrow geometry.…”

Section: Description Of Modelsmentioning

confidence: 99%

Watering or buffering? Runoff and sediment pollution control from furrow irrigated fields in arid environments

Campo‐Bescós¹,

Muñoz‐Carpena²,

Kiker³

et al. 2015

Agriculture, Ecosystems & Environment

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New Results for an Approximate Method for Calculating Two-Dimensional Furrow Infiltration

Cited by 20 publications

References 29 publications

A hybrid finite volume-finite element model for the numerical analysis of furrow irrigation and fertigation

A hybrid finite volume-finite element model for the numerical analysis of furrow irrigation and fertigation

Approximate Explicit Solution to the Green-Ampt Infiltration Model for Estimating Wetting Front Depth

Watering or buffering? Runoff and sediment pollution control from furrow irrigated fields in arid environments

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