A two-phase model for dry density-varying granular flows over general topography

Y. C. Tai, C. Y. Kuo, L. T. Shen, S. S. Hsiau

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Landslides, debris flows or granular avalanches are comprised of mixtures of grain-particles (sand, gravel and rocks) and an interstitial fluid (water or air). This work is concerned with an application of two-phase model for avalanches, debris flows or landslides down arbitrary natural topographic terrains of shallow curvatures, in which the moving mass is treated with air as the interstitial fluid. At the flow surface, air entrainment/extrusion is considered. The rate of entrainment is assumed to depend on the divergent or convergent behavior of the solid constituent. A Non-Oscillatory Central (NOC) scheme with high order cell reconstruction is implemented for numerical investigation. The key features and the capability of the proposed model are illustrated by numerical simulations of landslides over non-trivial topography.

Original languageEnglish
Title of host publicationLandslides and Engineered Slopes
Subtitle of host publicationProtecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012
EditorsErik Eberhardt, Corey Froese, A. Keith Turner, Serge Leroueil
PublisherCRC Press/Balkema
Pages1679-1685
Number of pages7
ISBN (Print)9780415621236
Publication statusPublished - 2012
Event11th International Symposium on Landslides and 2nd North American Symposium on Landslides, 2012 - Banff, Canada
Duration: 2012 Jun 22012 Jun 8

Publication series

NameLandslides and Engineered Slopes: Protecting Society through Improved Understanding - Proceedings of the 11th International and 2nd North American Symposium on Landslides and Engineered Slopes, 2012
Volume2

Conference

Conference11th International Symposium on Landslides and 2nd North American Symposium on Landslides, 2012
CountryCanada
CityBanff
Period12-06-0212-06-08

All Science Journal Classification (ASJC) codes

  • Earth-Surface Processes
  • Geotechnical Engineering and Engineering Geology

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