STORM SURGE SIMULATIONS INCLUDING WAVE-CURRENT INTERACTIONS BASED ON THE 3D NEARSHORE CURRENT MODEL

  • Hwusub Chun
  • Kyungmo Ahn
  • Witold Cieslikiewicz

Abstract

This paper presents the numerical simulation of storm surges including wave-current interactions based on the 3D nearshore current model. Newly developed numerical model included new terms on surface stress and wave-induced Reynolds stress. The present nearshore current model calculates nearshore current field under storm surge, the wave forcing terms should be provided by the additional computation on the waves and surface roller. For the wave-current interactions, the present model is dynamically coupled with wind wave model which is modified WAM applicable to shallow water. We conducted storm surge simulations in Youngil-bay located in the east coast of the Republic of Korea. One of the purpose of this simulation is to estimate the influence of large breakwater constructed in the north side of bay entrance on the erosion of beaches located inside bay area during the storm.

References

Chun, H. and Ahn, K., (2017). Storm waves on the East coast of Korea: 20 years of wave hindcasting. Journal of Coastal Research, dor:10.2112/JCOASTRES-D-16-16- 00139.1.

Chun, H. and Suh, K.D., (2017). Analysis of longshore currents with an Eulerian nearshore currents model. Journal of Coastal Research, dor:10.2112/JCOASTRESD- 16-16-00180.1.

Choi, H. and Moin, P. (1994). Effects of the omputational time step on numerical methods of turbulent flows. Journal of Computational Physics, 113(1), pp1-4.

Published
2018-12-30
How to Cite
Chun, H., Ahn, K., & Cieslikiewicz, W. (2018). STORM SURGE SIMULATIONS INCLUDING WAVE-CURRENT INTERACTIONS BASED ON THE 3D NEARSHORE CURRENT MODEL. Coastal Engineering Proceedings, 1(36), waves.85. https://doi.org/10.9753/icce.v36.waves.85