Numerical simulation of dam break flow impact on vertical cylinder by cumulant lattice Boltzmann method

Seiya Watanabe, Shintaro Fujisaki, Changhong Hu

研究成果: Contribution to journalArticle査読

抄録

The purpose of this study is to apply the cumulant lattice Boltzmann method (LBM) to simulate high Reynolds number free surface flows. The single-phase cumulant LBM is extended to solve the free surface flows by using the phase-field method as the interface capturing scheme. Numerical simulations are performed on an experimental problem of dam break flow impact on a vertical cylinder. Important numerical aspects such as collision model, grid resolution, time step and interface mobility parameter are investigated. It is found that the severe impact pressure oscillation in the simulation by the conventional SRT model, can be significantly suppressed by the cumulant model. Good agreement between the cumulant LBM numerical simulation and the experiment has been obtained on both the free surface profiles and the impact pressures. The numerical results obtained by the present study demonstrate that the cumulant LBM can be a powerful numerical tool for simulations of violent free surface flow problems.

本文言語英語
ページ(範囲)185-194
ページ数10
ジャーナルJournal of Hydrodynamics
33
2
DOI
出版ステータス出版済み - 4 2021

All Science Journal Classification (ASJC) codes

  • モデリングとシミュレーション
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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