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Water Resources

, Volume 46, Supplement 1, pp S43–S55 | Cite as

Numerical Modeling of the Behavior of a Destructive Rain Flood on a Mountain River

  • E. S. Vasil’evaEmail author
  • A. I. Aleksyuk
  • P. A. Belyakova
  • T. A. Fedorova
  • V. V. Belikov
WATER RESOURCES AND THE REGIME OF WATER BODIES
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Abstract

The objective of this study was to provide the most accurate presentation of the behavior of a disastrous rain flood, which had resulted in destruction of a dam, casualties, and significant material damage. The problems set were solved by methods of numerical modeling in the two-dimensional setting applying the STREAM 2D CUDA software package. To calculate the rain flood, a catchment model of the Durso River was developed on a triangular non-uniform mesh, adapted to the river channel and the main inflows. To ensure direct numerical modeling of the dam’s destruction, a model was developed, which included the water area of the reservoir, the dam, composed of non-homogeneous earth material, and a downstream section of the river from the dam to the river mouth. The main results of the study were: the hydrograph of the water discharge of the rain flood, calculated by the actual precipitation data; a description of the washout of the earth dam composed of non-homogeneous materials, resulting from water spill over the dam crest, and a desctiption of the downstream spread of the breach wave.

Keywords:

numerical modeling shallow-water equations rain flood discharge hydrograph earth dam breach wave 

Notes

FUNDING

This work was supported by the Russian Science Foundation, project no. 17-77-30 006.

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • E. S. Vasil’eva
    • 1
    Email author
  • A. I. Aleksyuk
    • 1
    • 2
  • P. A. Belyakova
    • 1
  • T. A. Fedorova
    • 1
  • V. V. Belikov
    • 1
  1. 1.Water Problems Institute, Russian Academy of SciencesMoscowRussia
  2. 2.Faculty of Mechanics and Mathematics, Moscow State UniversityMoscowRussia

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