APPLICATION OF COUPLED FLUID-STRUCTURE-SEDIMENT INTERACTION NUMERICAL MODEL TO TSUNAMI-INDUCED LOCAL SCOURING AROUND A MOVABLE INLAND STRUCTURE

• NAKAMURA Tomoaki

  名古屋大学 高等研究院

• NEZASA Yuta

  名古屋大学大学院工学研究科社会基盤工学専攻

• MIZUTANI Norimi

  名古屋大学 大学院工学研究科社会基盤工学専攻

Bibliographic Information

Other Title

• 遡上津波による非固定陸上構造物周辺の洗掘現象への流体・構造・地形変化連成数値計算モデルの適用

Abstract

 Tsunami-induced local scouring around a movable inland structure on the sand bed is investigated using a three-dimensional coupled fluid-structure-sediment interaction model in terms of the displacement of the structure. From a comparison with experimental data, it is found that the water surface elevation and the bed profile change are predicted reasonably well regardless of the absence or presence of the drawdown. Moreover, the bed profile change at the seaward and landward side of the structure is less affected by whether the calculation of the motion of the structure is implemented in the model. However, it slightly affects local scouring around the seaward corner of the structure because the displacement of the structure changes the flow field around the structure. This suggests that it is essential to consistently calculate the motion of the structure when assessing local scouring around movable structures.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 69 (2), I_503-I_508, 2013

  Japan Society of Civil Engineers

Keywords

• scour
• tsunami
• movable structure
• sediment transport
• numerical analysis

Details

• CRID: 1390282680329183616
• NII Article ID: 130004961769
• DOI: 10.2208/jscejoe.69.i_503
• ISSN: 21854688
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed