Journal of Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회논문집)

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
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Hydraulic and Numerical Tests on Wave Overtopping for Vertical Seawall with Relatively Shallow and Steep Sloped Water Depth

상대적으로 수심이 낮고 급한 전면 경사를 갖는 직립식 호안에서의 월파량 산정에 관한 수리 및 수치 실험

  • Young-Taek, Kim (Department of Hydro Science and Engineering Research, Korea Institute of Civil Engineering and Building Technology) ;
  • Hyukjin, Choi (Coast and Ocean Technology Institute) ;
  • Hwangki, Lee (Coast and Ocean Technology Institute)
  • 김영택 (한국건설기술연구원 수자원하천연구본부) ;
  • 최혁진 ((주)해안해양기술) ;
  • 이황기 ((주)해안해양기술)
  • Received : 2022.11.14
  • Accepted : 2022.12.08
  • Published : 2022.12.31
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Abstract

In Korea, the hydraulic model tests for measuring the wave overtopping have been almost conducted with no bottom slope or single slope condition in Korea. In this study, the bottom seabed for the coastal road area was fabricated at the wave flume and the wave overtopping was measured. The overtopping rate was also measured with the numerical modelling by OLAFoam. The measuring data were compared with EurOtop manual. It could be known the the influence of the foreslope in front of the vertical wall was significant and the these effects should be concerned when designing the coastal structures. And also it could be known that OLAFoam could be used to predict the wave overtopping rate for the complex bottom topography.

국내에서 수행된 대부분의 항만구조물에 대한 월파량 산정 실험은 구조물 전면 바닥 경사가 일정한 조건 또는 전면경사면이 설치되지 않은 상태에서 수행되었다. 금번 실험에서는 직립식 호안도로 전면의 수심을 단면수로에 재현하고 외해에서 파랑 내습시 월파량을 계측하였다. 월파량의 계측은 수리실험이외에 OLAFoam을 적용하였다. 계측결과는 기존 연구성과인 EurOtop과 비교하였다. 실험 결과비교를 통하여 직립식 구조물의 경우 전면 경사면의 영향이 매우 큰 것을 알 수 있었으며, 향후 EurOtop 등의 적용시 이에 대한 검토가 필요할 것이다. 또한 OLAFoam을 활용하여 복잡한 지형을 갖는 구조물에 대해서도 월파량 예측이 가능할 것을 알 수 있었다.

Keywords

Acknowledgement

본 연구는 해양수산과학기술진흥원의 지원(과제번호: 20210233)으로 수행되었으며, 연구비 지원에 감사드립니다.

References

  1. Altomare, C., Suzuki, T., Chen, X., Verwaest, T. and Kortenhaus, A. (2016). Wave overtopping of sea dikes with very shallow foreshores. Coastal Engineering, 116, 236-257. https://doi.org/10.1016/j.coastaleng.2016.07.002
  2. De Rouck, J., Van der Meer, J.W., Allsop, N.W.H., Franco, L. and Verhaeghe, H. (2002). Wave overtopping at coastal structures: development of a database toward up-graded prediction model. Proceedings 28th International Conference Coastal Engineering, ASCE, 2140-2152.
  3. Engelund, F. (1953). On the laminar and turbulent flow of ground water through homogeneous sand. Transactions of the Danish Academy of Technical Sciences 3.
  4. Higuera, P., Lara, J.L. and Losada, I.J. (2013). Realistic wave generation and active wave absorption for Navier-Stokes models: Application to OpenFOAM®. Coastal Engineering, 71, 102-118. https://doi.org/10.1016/j.coastaleng.2012.07.002
  5. Higuera, P., Losada, I.J. and Lara, J.L. (2015). Three-dimensional numerical wave generation with moving boundaries. Coastal Engineering, 101, 35-47.
  6. Jacobsen, N.G., Fuhrman, D.R. and Fredsoe, J. (2012). A wave generation toolbox for the open-source CFD library: OpenFoam®. International Journal for Numerical Methods in Fluids, 70(9), 1073-1088. https://doi.org/10.1002/fld.2726
  7. Ministry of Oceans and Fisheries (MOF) (2016). Design standard of harbor and fishery ports.
  8. Ministry of Oceans and Fisheries (MOF) (2021). Development of a warning system based on artificial intelligence overtopping prediction model for the preparedness in the typhoon disaster at the coastal area.
  9. Hwang, W.-K., Kim, T.-H., Kim, D.-S., Oh, M.H. and Park, J.-Y. (2018). Effect of wave-induced seepage on the stability of the rubble mound breakwater. Journal of the Koean Geotechnical Society, 34(3), 13-27 (in Korean).
  10. Lee, K.-H., Bae, J.-H., An, S.-W., Kim, D.-S. and Bae, K.-S. (2016). Numerical Analysis on Wave Characteristics around Submerged Breakwater in Wave and Current Coexisting Field by OLAFoam. Journal of Korean Society of Coastal and Ocean Engineers, 28(6), 332-349 (in Korean). https://doi.org/10.9765/KSCOE.2016.28.6.332
  11. Lee, G.S., Oh, S.-H. and Yoon, S.B. (2019). Evaluation of empirical porous-media parameters for numerical simulation of wave pressure on caisson breakwater armored with tetrapods. Journal of Korean Society of Coastal and Ocean Engineers. 31(6), 344-350 (in Korean). https://doi.org/10.9765/KSCOE.2019.31.6.344
  12. Van der Meer, J.W., Allsop, N.W.H., Bruce, T., De Rouck, J., Kortenhaus, A., Pullen, T., Schuttrumpf, H., Troch, P. and Zanuttigh, B. (2018). EurOtop, Manual on wave overtopping of sea defences and related structures. An overtopping manual largely based on European research, but for worldwide application (www.overtopping-manual.com).
  13. Van der Meer, J.W., Verhaeghe, H. and Steendam, G.J. (2009). The new wave overtopping database for coastal structures. Coastal Engineering, 56, 108-120.
  14. Verhaeghe, H. (2005). Neural Network Prediction of Wave Overtopping at Coastal Structure, Doctorate Dissertation, Ghent University.