Design Considerations for Brushwood Fences Concerning Bathymetry and Fence Locations

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

doi:10.1007/978-981-16-7735-9_25

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 volume › Conference contribution › Scientific › peer-review

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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 language	English
Title of host publication	Proceedings of the 2nd Vietnam Symposium on Advances in Offshore Engineering - Sustainable Energy and Marine Planning
Subtitle of host publication	Sustainable Energy and Marine Planning
Editors	Dat Vu Huynh, Anh Minh Tang, Dinh Hong Doan, Phil Watson
Place of Publication	Singapore
Publisher	Springer
Pages	238-245
Number of pages	8
ISBN (Electronic)	978-981-16-7735-9
ISBN (Print)	978-981-16-7734-2
DOIs	https://doi.org/10.1007/978-981-16-7735-9_25
Publication status	Published - 2022
Event	2nd Vietnam Symposium on Advances in Offshore Engineering, VSOE 2021 - Ho Chi Minh City, Viet Nam Duration: 1 Nov 2021 → 3 Nov 2021

Publication series

Name	Lecture Notes in Civil Engineering
Volume	208
ISSN (Print)	2366-2557
ISSN (Electronic)	2366-2565

Conference

Conference	2nd Vietnam Symposium on Advances in Offshore Engineering, VSOE 2021
Country/Territory	Viet Nam
City	Ho Chi Minh City
Period	1/11/21 → 3/11/21

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

Access to Document

10.1007/978-981-16-7735-9_25

Dao2022_Chapter_DesignConsiderationsForBrushwoFinal published version, 740 KB

Cite this

Dào, H. T., Hofland, B., Stive, M. J. F., Mai, T., & Ngo, A. (2022). Design Considerations for Brushwood Fences Concerning Bathymetry and Fence Locations. In D. V. Huynh, A. M. Tang, D. H. Doan, & P. Watson (Eds.), Proceedings of the 2nd Vietnam Symposium on Advances in Offshore Engineering - Sustainable Energy and Marine Planning: Sustainable Energy and Marine Planning (pp. 238-245). (Lecture Notes in Civil Engineering; Vol. 208). Springer. https://doi.org/10.1007/978-981-16-7735-9_25

Dào, Hoang Tung ; Hofland, Bas ; Stive, Marcel J.F. et al. / Design Considerations for Brushwood Fences Concerning Bathymetry and Fence Locations. Proceedings of the 2nd Vietnam Symposium on Advances in Offshore Engineering - Sustainable Energy and Marine Planning: Sustainable Energy and Marine Planning. editor / Dat Vu Huynh ; Anh Minh Tang ; Dinh Hong Doan ; Phil Watson. Singapore : Springer, 2022. pp. 238-245 (Lecture Notes in Civil Engineering).

@inproceedings{853cefafa0a546e781d5295f11f9d374,

title = "Design Considerations for Brushwood Fences Concerning Bathymetry and Fence Locations",

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.",

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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.; 2nd Vietnam Symposium on Advances in Offshore Engineering, VSOE 2021 ; Conference date: 01-11-2021 Through 03-11-2021",

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pages = "238--245",

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Dào, HT, Hofland, B , Stive, MJF, Mai, T & Ngo, A 2022, Design Considerations for Brushwood Fences Concerning Bathymetry and Fence Locations. in DV Huynh, AM Tang, DH Doan & P Watson (eds), Proceedings of the 2nd Vietnam Symposium on Advances in Offshore Engineering - Sustainable Energy and Marine Planning: Sustainable Energy and Marine Planning. Lecture Notes in Civil Engineering, vol. 208, Springer, Singapore, pp. 238-245, 2nd Vietnam Symposium on Advances in Offshore Engineering, VSOE 2021, Ho Chi Minh City, Viet Nam, 1/11/21. https://doi.org/10.1007/978-981-16-7735-9_25

Design Considerations for Brushwood Fences Concerning Bathymetry and Fence Locations. / Dào, Hoang Tung; Hofland, Bas ; Stive, Marcel J.F. et al.
Proceedings of the 2nd Vietnam Symposium on Advances in Offshore Engineering - Sustainable Energy and Marine Planning: Sustainable Energy and Marine Planning. ed. / Dat Vu Huynh; Anh Minh Tang; Dinh Hong Doan; Phil Watson. Singapore: Springer, 2022. p. 238-245 (Lecture Notes in Civil Engineering; Vol. 208).

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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T1 - Design Considerations for Brushwood Fences Concerning Bathymetry and Fence Locations

AU - Dào, Hoang Tung

AU - Hofland, Bas

AU - Stive, Marcel J.F.

AU - Mai, Tri

AU - Ngo, Anh

N1 - 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.

PY - 2022

Y1 - 2022

N2 - 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.

AB - 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.

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KW - Fence locations

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KW - SWASH

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Dào HT, Hofland B , Stive MJF, Mai T, Ngo A. Design Considerations for Brushwood Fences Concerning Bathymetry and Fence Locations. In Huynh DV, Tang AM, Doan DH, Watson P, editors, Proceedings of the 2nd Vietnam Symposium on Advances in Offshore Engineering - Sustainable Energy and Marine Planning: Sustainable Energy and Marine Planning. Singapore: Springer. 2022. p. 238-245. (Lecture Notes in Civil Engineering). doi: 10.1007/978-981-16-7735-9_25

Design Considerations for Brushwood Fences Concerning Bathymetry and Fence Locations

Abstract

Publication series

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Bibliographical note

Keywords

Access to Document

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