FLID-solid multiphase flow simulator using a SPH-DEM coupled method in consideration of liquid bridge force related to water content

Kumpei Tsuji, Mitsuteru Asai

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

Abstract

Most of the recent natural disasters such as landslide and tsunamis are complex phenomena in which fluid, ground, structures, etc. affect each other. Therefore, it is necessary to study from various mechanical viewpoints. Among them, in this research, we focus on “soil-water mixed phase flow” where fluid and soil affect each other, such as slope failure and ground collapse. In this study, ISPH method is applied for fluid simulation while DEM is applied for modelling of soil behavior. Then, a general-purpose fluid-solid multiphase flow simulator is developed using the ISPH-DEM coupling method. In addition, in DEM analysis, there are problems in consideration of apparent cohesion related to water content. In our analysis method, in order to adapt to unsaturated ground, the liquid bridge force model proposed in the powder technology field.

Original languageEnglish
Title of host publication6th International Conference on Particle-Based Methods. Fundamentals and Applications, PARTICLES 2019
EditorsEugenio Onate, P. Wriggers, T. Zohdi, M. Bischoff, D.R.J. Owen
PublisherInternational Center for Numerical Methods in Engineering
Pages668-679
Number of pages12
ISBN (Electronic)9788412110111
Publication statusPublished - 2019
Event6th International Conference on Particle-Based Methods. Fundamentals and Applications, PARTICLES 2019 - Barcelona, Spain
Duration: Oct 28 2019Oct 30 2019

Publication series

Name6th International Conference on Particle-Based Methods. Fundamentals and Applications, PARTICLES 2019

Conference

Conference6th International Conference on Particle-Based Methods. Fundamentals and Applications, PARTICLES 2019
CountrySpain
CityBarcelona
Period10/28/1910/30/19

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics

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