NUMERICAL CALCULATION OF TURBULENT STRUCTURE IN DEPTHVARYING UNSTEADY OPEN CHANNEL FLOWS

• NEZU Iehisa

  JAPAN SOCIETY OF CIVIL ENGINEERS

• USHIJIMA Satoru

  JAPAN SOCIETY OF CIVIL ENGINEERS

• SANJOU Michio

  JAPAN SOCIETY OF CIVIL ENGINEERS

Bibliographic Information

Other Title

• 水深変化を有する非定常な開水路流れの数値計算
• スイシン ヘンカ オ ユウスル ヒテイジョウ ナ カイスイロ ナガレ ノ スウチ ケイサン

Abstract

Numerical calculation of unsteady open-channel flows was carried out using a low Reynolds number k-ε model, coupled with an anisotropic turbulence model, and VOF method. The distributions of ensemble averaged velocity, turbulence intensity, and Reynolds shear stress have been obtained in the whole flow region from the wall to the time-dependent free surface. The results of these calculations agree well with LDA database of Nezu et al. (1997, ASCE). Further, the turbulent energy budget in depth-varying unsteady flows, which is difficult to measure, has been calculated and discussed.

Journal

• Doboku Gakkai Ronbunshu

  Doboku Gakkai Ronbunshu 2001 (691), 63-72, 2001-11-21

  Japan Society of Civil Engineers

Keywords

• unsteady open-channel flow
• low-Reynolds number k-ε model
• VOF method

Details

• CRID: 1390001205602828032
• NII Article ID: 130003983992
• NII Article ID: 10007242321
• NII Book ID: AN10014020
• DOI: 10.2208/jscej.2001.691_63
• ISSN: 18827187
• ISSN: 02897806
• NDL BIB ID: 5996550
• Web Site: http://id.ndl.go.jp/bib/5996550
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5996550
• Web Site: https://www.jstage.jst.go.jp/article/jscej1984/2001/691/2001_691_63/_pdf
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed