Effect of Turbulent Dissipation on the Dynamics of Dam Break Flow

• UZAWA Ken

  Center for Computational Science and E-systems, Japan Atomic Energy Agency

• WATANABE Tadashi

  Safety Research Center, Japan Atomic Energy Agency

抄録

The effect of turbulence on the dynamics of three-dimensional dam break flow is numerically investigated on the basis of the incompressible Reynolds-averaged Navier-Stokes (RANS) equations with the volume of fluid (VOF) function. It is found that the tip velocity over the ground and the impact pressure on the vertical wall in the Launder-Gibson (LG) model are in good agreement with experimental results. % The dynamics of the dam break flow is subject to the viscous dissipation during the collapse of the flow, which is underestimated in the laminar model and overestimated in the realizable k-ε (RKE) model. The turbulent viscous dissipation near the free surface is comparable to that in the water in the LG model.

収録刊行物

• Journal of Power and Energy Systems

  Journal of Power and Energy Systems 6 (2), 229-240, 2012

  一般社団法人 日本機械学会

キーワード

• Two-Phase Flow
• Dam Break
• Turbulence
• Second-Order Moment Closure Model

詳細情報

• CRID: 1390282680249150592
• NII論文ID: 130002099149
• DOI: 10.1299/jpes.6.229
• BIBCODE: 2012JPES....6..229U
• ISSN: 18813062
• Web Site: https://www.jstage.jst.go.jp/article/jpes/6/2/6_229/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可