Análisis comparativo de modelos de flujo de ríos 1-D aplicando un enfoque cuasi 2D para la predicción de llanuras de inundación

  • Mauricio Villazón Laboratory of Hydraulics, Faculty of Engineering, Katholieke Universiteit Leuven, Kasteelpark Arenberg 40, Leuven, Belgium.Laboratory of Hydraulics, Facultad de Ciencias y Tecnología, Universidad Mayor de San Simón, Km 4,2 Avenida Petrolera, Cochabamba, Bolivia.
  • Luis Timbe Grupo de Ciencias de la Tierra y del Ambiente, Universidad de Cuenca, Av. 12 de Abril s/n, Cuenca, Ecuador. https://orcid.org/0000-0001-5623-0487
  • Patrick Willems Laboratory of Hydraulics, Faculty of Engineering, Katholieke Universiteit Leuven, Kasteelpark Arenberg 40, Leuven, Belgium. https://orcid.org/0000-0002-7085-2570
Palabras clave: Modelos hidrodinámicos 1-D, aproximación cuasi 2-D, modelación de planicies aluviales, curva hipsométrica

Resumen

En este estudio se realizó un análisis comparativo de tres modelos hidrodinámicos de ríos 1-D (Mike 11, InfoWorks-RS y HEC-RAS) con una configuración cuasi 2-D. La planicie de inundación fue esquematizada mediante una red de ramales ficticios o como áreas de almacenamiento. Los modelos se evaluaron en un área reducida de la cuenca del río Dender en Bélgica, para lo cual se simularon tres eventos de inundación históricos y ocho eventos sintéticos con períodos de retorno entre 1 y 1000 años, respectivamente. La eficiencia de los modelos se cuantificó comparando los valores simulados de caudal, nivel de la superficie del agua, volumen de inundación y área inundada. Los resultados muestran que los tres modelos y las dos configuraciones empleadas para la representación de las planicies aluviales dan resultados muy similares en el cauce principal del río, con un error cuadrático medio de alrededor de 6 cm para los niveles máximos y 2% para los caudales. A pesar de la alta precisión en el cauce, los niveles de crecida en la llanura aluvial tienen un error cuadrático medio mayor, de aproximadamente 25 cm, en condiciones de inundación.

 

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Publicado
2013-06-25
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Cómo citar
Villazón, M., Timbe, L., & Willems, P. (2013). Análisis comparativo de modelos de flujo de ríos 1-D aplicando un enfoque cuasi 2D para la predicción de llanuras de inundación. Maskana, 4(1), 107-126. https://doi.org/10.18537/mskn.04.01.08
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Artículos científicos