PREDICTION OF SEDIMENT TRANSPORT IN SWASH ZONE CONSIDERING SATURATED-UNSATURATED GROUNDWATER FLOW

• MIYATAKE Makoto

  函館工業高等専門学校 社会基盤工学科

• ISHIBASHI Sakura

  函館工業高等専門学校専攻科 社会基盤工学専攻

• KIMURA Katsutoshi

  室蘭工業大学大学院 くらし環境系領域

• OCHI Masashi

  日本データーサービス株式会社

• SASSA Shinji

  (国研)海上・港湾・航空技術研究所 港湾空港技術研究所 動土質研究グループ

• SHIROZU Hajime

  山口大学大学院 社会建設工学分野

Bibliographic Information

Other Title

• 前浜浸透・滲出流を考慮した波打ち帯の飽和・不飽和斜面の漂砂輸送解析
• ゼン ハマ シントウ ・ シンシュツリュウ オ コウリョ シタ ナミウチ タイ ノ ホウワ ・ フホウワ シャメン ノ ヒョウサ ユソウ カイセキ

Abstract

 Numerical simulations are performed to evaluate sediment transport affected by saturation of a beach slope in the swash zone. The wave transformation and groundwater flow are estimated using the Reynolds model describing the average motion of turbulent flow coupled with the saturated-unsaturated seepage flow model. The advection diffusion model is used to compute the transport of suspended sediment in the swash zone. Nielsen formula, which estimates the pickup rate of sediment, is applied as the bottom boundary condition. The infiltration-exfiltration effects are quantified through a permeable Shields parameter. The comparison between present model results and previous experimental data show that, in the case of fine sand, the characteristics of sediment transport due to saturation of a beach slope can be evaluated by changes in the effective weight of sediment due to infiltration-exfiltration flow.

Journal

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

  Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 74 (2), I_715-I_720, 2018

  Japan Society of Civil Engineers

Keywords

• swash sediment transport
• saturation
• infiltration and exfiltration
• Shields number

Details

• CRID: 1390845713017718784
• NII Article ID: 130007504110
• DOI: 10.2208/kaigan.74.i_715
• ISSN: 18838944
• ISSN: 18842399
• HANDLE: 10258/00010254
• NDL BIB ID: 029325660
• Web Site: https://muroran-it.repo.nii.ac.jp/records/10313
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I029325660
• Web Site: https://www.jstage.jst.go.jp/article/kaigan/74/2/74_I_715/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed