Coastal geomorphology model using boussonesq equation considering undertow effect

Dae Hong Kim, Sang Young Son

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The undertow effect on coastal morphological modeling is studied. A fully nonlinear Boussinesq equation including horizontal vorticity produced by bottom shear stress is used for the prediction of flows. A depth-integrated sediment transport equation is coupled with the Boussinesq equation for the prediction of sediment transport. To solve these equations numerically, a fourth-order accurate finite volume method on the basis of a compact MUSCL TVD scheme is used, and the numerical fluxes are computed by the HLLC approximate Riemann solver. The coastal geomorphology model with and without horizontal vorticity effects is applied to surf zone, and the computed flow velocities are compared to measured data. When the vorticity effects are included the undertow flow profile shows closer agreement with measured data quantitatively and qualitatively. Lastly, an offshore bar migration by monochromatic wave is simulated and the contributions of the undertow effects are investigated.

Original languageEnglish
Title of host publicationProceedings of the 25th International Ocean and Polar Engineering Conference, ISOPE 2015
PublisherInternational Society of Offshore and Polar Engineers
Pages1259-1263
Number of pages5
ISBN (Electronic)9781880653890
Publication statusPublished - 2015 Jan 1
Externally publishedYes
Event25th International Ocean and Polar Engineering Conference, ISOPE 2015 - Kona, Big Island, United States
Duration: 2015 Jun 212015 Jun 26

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
Volume2015-January
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Other

Other25th International Ocean and Polar Engineering Conference, ISOPE 2015
CountryUnited States
CityKona, Big Island
Period15/6/2115/6/26

Fingerprint

Geomorphology
Vorticity
Sediment transport
Finite volume method
Nonlinear equations
Flow velocity
Shear stress
Fluxes

Keywords

  • Beach erosion
  • Boussinesq equation
  • Numerical model
  • Sediment transport
  • Undertow

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

Cite this

Kim, D. H., & Son, S. Y. (2015). Coastal geomorphology model using boussonesq equation considering undertow effect. In Proceedings of the 25th International Ocean and Polar Engineering Conference, ISOPE 2015 (pp. 1259-1263). (Proceedings of the International Offshore and Polar Engineering Conference; Vol. 2015-January). International Society of Offshore and Polar Engineers.

Coastal geomorphology model using boussonesq equation considering undertow effect. / Kim, Dae Hong; Son, Sang Young.

Proceedings of the 25th International Ocean and Polar Engineering Conference, ISOPE 2015. International Society of Offshore and Polar Engineers, 2015. p. 1259-1263 (Proceedings of the International Offshore and Polar Engineering Conference; Vol. 2015-January).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kim, DH & Son, SY 2015, Coastal geomorphology model using boussonesq equation considering undertow effect. in Proceedings of the 25th International Ocean and Polar Engineering Conference, ISOPE 2015. Proceedings of the International Offshore and Polar Engineering Conference, vol. 2015-January, International Society of Offshore and Polar Engineers, pp. 1259-1263, 25th International Ocean and Polar Engineering Conference, ISOPE 2015, Kona, Big Island, United States, 15/6/21.
Kim DH, Son SY. Coastal geomorphology model using boussonesq equation considering undertow effect. In Proceedings of the 25th International Ocean and Polar Engineering Conference, ISOPE 2015. International Society of Offshore and Polar Engineers. 2015. p. 1259-1263. (Proceedings of the International Offshore and Polar Engineering Conference).
Kim, Dae Hong ; Son, Sang Young. / Coastal geomorphology model using boussonesq equation considering undertow effect. Proceedings of the 25th International Ocean and Polar Engineering Conference, ISOPE 2015. International Society of Offshore and Polar Engineers, 2015. pp. 1259-1263 (Proceedings of the International Offshore and Polar Engineering Conference).
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