Design Considerations for Brushwood Fences Concerning Bathymetry and Fence Locations

Hoang Tung Dào*, Bas Hofland, Marcel J.F. Stive, Tri Mai, Anh Ngo

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

Wooden fences are nature-based supporting structures to restore mangroves in the Mekong Delta. The hydraulic functioning of wooden fences was studied in previous studies. However, the role of bathymetry in the dissipation and damping of waves by wooden fences has not been studied yet. Thus, in this study, a numerical approach is used to find the effect of the position of fences and the foreshore bathymetry, including two particular slopes of 1/200 and 1/500, on wave damping due to wooden fences. The results show that the bottom slope significantly influences the dissipation of incoming waves, the so-called pre-dissipation, before damping by the wooden fences. Differences in pre-dissipation occur between fence locations along the cross-shore slopes. The higher pre-dissipation takes place for wooden fences closer to the land, as the depth-limited wave height at the fence reduces. The efficiency in wave damping of wooden fences is also increasing as the freeboard is becoming larger for the fence located closer landward.

Original languageEnglish
Title of host publicationProceedings of the 2nd Vietnam Symposium on Advances in Offshore Engineering - Sustainable Energy and Marine Planning
Subtitle of host publicationSustainable Energy and Marine Planning
EditorsDat Vu Huynh, Anh Minh Tang, Dinh Hong Doan, Phil Watson
Place of PublicationSingapore
PublisherSpringer
Pages238-245
Number of pages8
ISBN (Electronic)978-981-16-7735-9
ISBN (Print)978-981-16-7734-2
DOIs
Publication statusPublished - 2022
Event2nd Vietnam Symposium on Advances in Offshore Engineering, VSOE 2021 - Ho Chi Minh City, Viet Nam
Duration: 1 Nov 20213 Nov 2021

Publication series

NameLecture Notes in Civil Engineering
Volume208
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

Conference2nd Vietnam Symposium on Advances in Offshore Engineering, VSOE 2021
Country/TerritoryViet Nam
CityHo Chi Minh City
Period1/11/213/11/21

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care

Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • Bottom slope
  • Fence locations
  • Numerical model
  • SWASH
  • Wooden fences

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