Radio máximo de la zona saturada en superficie bajo riego por goteo a caudal constante. Modelos analítico y empírico

  1. del Vigo, Ángel 1
  2. Zubelzu, Sergio 2
  3. Juana, Luis 2
  1. 1 Universidad Camilo José Cela
    info

    Universidad Camilo José Cela

    Villanueva de la Cañada, España

    ROR https://ror.org/03f6h9044

  2. 2 Universidad Politécnica de Madrid
    info

    Universidad Politécnica de Madrid

    Madrid, España

    ROR https://ror.org/03n6nwv02

Zeitschrift:
Ingeniería del agua

ISSN: 1134-2196

Datum der Publikation: 2023

Ausgabe: 27

Nummer: 2

Seiten: 111-124

Art: Artikel

DOI: 10.4995/IA.2023.19328 DIALNET GOOGLE SCHOLAR lock_openOpen Access editor

Andere Publikationen in: Ingeniería del agua

Ziele für nachhaltige Entwicklung

Zusammenfassung

A numerical model able to study filtration patterns under drip irrigation conditions was presented in previous papers. The tests concluded that, the model is robust and efficient regardless of the soil characteristics. At the same time, a simplified analytical model was presented for superficial drip irrigation boundary conditions, which describes, the evolution of the bulb over the time as a function of the applied flow rate. This model is based on four soil parameters: saturated hydraulic conductivity, suction matric head at the wetting front, and the initial and saturated soil moisture contents. Simulations for soils characterized with functions type, Gardner, Clapp and Hornberger and van Genuchten-Mualem, were performed to get the maximum saturated radius on the surface at constant applied flow, for each of these three characterization schemes. Then, a set of three empirical equations has been obtained. Moreover, via the simplified analytical model, an expression in steady regime has been reached for the maximum saturated radius zone as a function of the applied flow rate and soil parameters. This paper presents the set of empirical equations obtained by simulation, and the simplified analytical model, as well as a comparison of these two models with the Wooding analytical model, which describes the same irrigation characteristics.

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