非ダルシー型抵抗則を用いた捨石水制内部流れおよび3次元LESによる水制周辺流れの数値計算

• 赤堀 良介

  東京工業大学大学院

• 道奥 康治

  神戸大学大学院

書誌事項

タイトル別名

• NUMERICAL CALCULATION OF FLOWS BY A RUBBLE MOUND GROIN BY A COMBINED MODEL OF A POROUS FLOW MODEL WITH A NONDARCIAN RESISTANCE LAW AND A 3-DIMENSIONAL LES MODEL

説明

This study present a combined numerical model of a porous flow model that employ a non-Darcian resistance law and a 3-dimensional Large Eddy Simulation model in order to investigate 3-dimensional and temporal structures of flows around a rubble mound groin. A model's accuracy is cross-checked by comparing numerical results to observed results of an existing experiment, and model's results show good agreement in terms of time- and depth-averaged sense. Calculation results also imply that a permeable groin restricts growth of secondary flows in a constriction section. However, a combined model is not able to produce unsteady characteristics of flows that are caused by small scale and structured turbulences in a down-stream region of a groin.

収録刊行物

• 水工学論文集

  水工学論文集 52 1045-1050, 2008

  公益社団法人 土木学会

キーワード

• open channel
• porous media
• non-Darcian
• rubble mound groin
• LES

詳細情報

• CRID: 1390282680148618624
• NII論文ID: 130004043931
• DOI: 10.2208/prohe.52.1045
• ISSN: 18849172
• ISSN: 09167374
• Web Site: https://www.jstage.jst.go.jp/article/prohe1990/52/0/52_0_1045/_pdf
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可