3D NUMERICAL SIMULATION ON DETACHING PROCESS OF ARMOR BLOCK ON THE TOP OF COASTAL LEVEE BY ACCURATE PARTICLE METHOD

• IKARI Hiroyuki

  京都大学 工学研究科社会基盤工学専攻

• GOTOH Hitoshi

  京都大学 工学研究科社会基盤工学専攻

• KOBAYASHI Yuji

  日本工営株式会社 コンサルタント海外事業本部

• FUJIWARA Satoshi

  京都大学大学院 工学研究科社会基盤工学専攻

Bibliographic Information

Other Title

• 三次元高精度粒子法による海岸堤防裏法肩被覆ブロック離脱過程の数値解析

Abstract

 Detachment of armor block on a landward slope due to tsunami overopping flow is one of the factors of failure of coastal levee. This detachment is caused by pressure drop on the top of levee. This phenomenon has been investigated in previous experimental researches, however, their investigations are not always adequate because it is difficult to measure due to violent flow. This paper proposes a 3D numerical model on the bases of a particle method that can provide a detaching simulation of armor block on a coastal levee caused by an ovetoppoing flow. In the proposed model, Higher order Laplacian scheme is modified, and this modification contributes to computational cost cut by 40~50%. The numerical result by the proposed model shows pressure drop and strong turbulence intensity on the top of levee and detaching process with rotation of block. These are in good agreement with a previous experimental result.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 75 (2), I_853-I_858, 2019

  Japan Society of Civil Engineers

Keywords

• particle method
• coastal levee
• armor block
• tsunami
• overtopping flow

Details

• CRID: 1390001277369669888
• NII Article ID: 130007730333
• DOI: 10.2208/kaigan.75.i_853
• ISSN: 18838944
• ISSN: 18842399
• Web Site: https://www.jstage.jst.go.jp/article/kaigan/75/2/75_I_853/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed