DIRECT NUMERICAL SIMULATION MODEL OF SEEPAGE FLOW AND GRANULAR SOILS BY USING PS-MRT LATTICE BOLTZMANN MODEL

• FUKUMOTO Yutaka

  長岡技術科学大学 工学研究科

• OHTSUKA Satoru

  長岡技術科学大学 工学研究科

Bibliographic Information

Other Title

• 浸透流と土粒子の直接数値計算のためのPS-MRT Lattice Boltzmannモデル

Abstract

We proposed a direct numerical simulation model of seepage flow and granular soils by combining the lattice Boltzmann method and the discrete element method. Multiple Relaxation Time (MRT) model was introduced in order to obtain stable solutions of the fluid flow under high Reynolds number condition. Partially Saturated (PS) model, which retain a local operation at each fluid node and keep from intensive increasing the computational costs for the calculation of collision term, was also introduced as a solid-fluid coupled model. We show the effectiveness of the PS-MRT lattice Boltzmann model through several validation tests.

Journal

• Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))

  Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 72 (2), I_335-I_343, 2016

  Japan Society of Civil Engineers

Keywords

• multiphase flow
• seepage flow
• granular materials
• coupled particle-fluid method

Details

• CRID: 1390282680327834240
• NII Article ID: 130005311871
• DOI: 10.2208/jscejam.72.i_335
• ISSN: 21854661
• Web Site: https://www.jstage.jst.go.jp/article/jscejam/72/2/72_I_335/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed