Application of Delft3d for Designing and Assessing New Solutions to Improve Sediment Input to an Erosion Prone Coast

8 pages•Published: September 20, 2018

José Pinho, José Coelho, Stênio Venâncio, Luís Vieira, Bárbara Vieira and Jose Vieira

Abstract

The construction of harbor defense structures changes the natural sedimentary fluxes that contribute to feed the coastal drift in the adjacent beaches, in many harbors of the world located at river mouths. This paper presents a numerical modelling work, based on the Delft3D software, to study morphodynamics at the river Lima estuary, Portugal. This model was implemented recurring to a hydroinformatic environment that was constructed at University of Minho along the last two decades. Considering specific hydrodynamic conditions and typical characteristics of the estuarine sediments, the capacity of hypothetical structures to improve transport of sediments to the coast was assessed: (i) a submerged transverse non-erodible dam and (ii) an emerged groin linked to the left embankment located at the upstream section of the harbor. The implemented hydroinformatic environment presents capacities to simulate the complex morphodynamic behavior of river mouths. The preliminary results reveals that the proposed structures can have a positive impact throughout dredging works facilitation by transferring depositional areas during flood events to a location near the coast inside the harbor. Ongoing field acquisition data will be essential to validate depositional patterns under different river discharges and wave conditions.

Keyphrases: coastal erosion, delft3d, numerical modelling, sediment transport

In: Goffredo La Loggia, Gabriele Freni, Valeria Puleo and Mauro De Marchis (editors). HIC 2018. 13th International Conference on Hydroinformatics, vol 3, pages 1664-1671.

Links:	https://easychair.org/publications/paper/vrZB
	https://doi.org/10.29007/lqms

BibTeX entry

@inproceedings{HIC2018:Application_Delft3d_Designing_Assessing,
  author    = {José Pinho and José Coelho and Stênio Venâncio and Luís Vieira and Bárbara Vieira and Jose Vieira},
  title     = {Application of Delft3d for Designing and Assessing New Solutions to Improve Sediment Input to an Erosion Prone Coast},
  booktitle = {HIC 2018. 13th International Conference on Hydroinformatics},
  editor    = {Goffredo La Loggia and Gabriele Freni and Valeria Puleo and Mauro De Marchis},
  series    = {EPiC Series in Engineering},
  volume    = {3},
  publisher = {EasyChair},
  bibsource = {EasyChair, https://easychair.org},
  issn      = {2516-2330},
  url       = {/publications/paper/vrZB},
  doi       = {10.29007/lqms},
  pages     = {1664-1671},
  year      = {2018}}

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