Radio máximo de la zona saturada en superficie bajo riego por goteo a caudal constante. Modelos analítico y empírico
[EN] 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 superficia...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2023 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | español |
| OAI Identifier: | oai:riunet.upv.es:10251/193176 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/193176 |
| Access Level: | acceso abierto |
| Palabra clave: | Water flow Simulations Bulb size Trickle irrigation design Flujo de agua Simulaciones Tamaño del bulbo Diseño de riegos |
| Sumario: | [EN] 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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