Numerical Modelling of Wave Motion and Seabed Response around a Submerged Porous Breakwater

Jisheng Zhang, B. Wang, D.-S. Jeng, Yakun Guo

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

Abstract

In this study, a numerical model is developed to investigate the wave motion and seabed response around a submerged porous breakwater due to a surface solitary wave. The wave motion is simulated by numerically solving the extended Navier-Stokes (NS) equations, and the seabed response is gained from the numerical solutions of poroelastic theory. The existing wave model (COBRAS) and soil model (PORO-WSSI I) are combined to establish the new model--POROWSSI II. The numerical model is applied to investigate the effects of porosity and equivalent mean diameter of porous media on the wave propagation in the vicinity of porous structure. The results show that the porosity has more impact than equivalent mean diameter on the wave transformation and flow structure. The solitary wave-induced seabed responses such as pore pressure and vertical effective stress around the foundation of porous breakwater are presented as a case study.
Original languageEnglish
Title of host publicationThe Proceedings of The Twentieth (2010) International Offshore and Polar Engineering Conference
PublisherISOPE
Pages1003-1010
Number of pages8
Volume1
ISBN (Print)9781880653777
Publication statusPublished - 2010
EventThe Twentieth (2010) International Offshore and Polar Engineering Conference - Beijing, China
Duration: 20 Jun 201025 Jun 2010

Conference

ConferenceThe Twentieth (2010) International Offshore and Polar Engineering Conference
CountryChina
CityBeijing
Period20/06/1025/06/10

Fingerprint

Breakwaters
Solitons
Numerical models
Porosity
Pore pressure
Flow structure
Surface waves
Wave propagation
Navier Stokes equations
Porous materials
Soils

Keywords

  • solitary wave
  • porous breakwater
  • seabed response
  • equivalent mean diameter

Cite this

Zhang, J., Wang, B., Jeng, D-S., & Guo, Y. (2010). Numerical Modelling of Wave Motion and Seabed Response around a Submerged Porous Breakwater. In The Proceedings of The Twentieth (2010) International Offshore and Polar Engineering Conference (Vol. 1, pp. 1003-1010). ISOPE.

Numerical Modelling of Wave Motion and Seabed Response around a Submerged Porous Breakwater. / Zhang, Jisheng; Wang, B.; Jeng, D.-S.; Guo, Yakun.

The Proceedings of The Twentieth (2010) International Offshore and Polar Engineering Conference. Vol. 1 ISOPE, 2010. p. 1003-1010.

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

Zhang, J, Wang, B, Jeng, D-S & Guo, Y 2010, Numerical Modelling of Wave Motion and Seabed Response around a Submerged Porous Breakwater. in The Proceedings of The Twentieth (2010) International Offshore and Polar Engineering Conference. vol. 1, ISOPE, pp. 1003-1010, The Twentieth (2010) International Offshore and Polar Engineering Conference, Beijing, China, 20/06/10.
Zhang J, Wang B, Jeng D-S, Guo Y. Numerical Modelling of Wave Motion and Seabed Response around a Submerged Porous Breakwater. In The Proceedings of The Twentieth (2010) International Offshore and Polar Engineering Conference. Vol. 1. ISOPE. 2010. p. 1003-1010
Zhang, Jisheng ; Wang, B. ; Jeng, D.-S. ; Guo, Yakun. / Numerical Modelling of Wave Motion and Seabed Response around a Submerged Porous Breakwater. The Proceedings of The Twentieth (2010) International Offshore and Polar Engineering Conference. Vol. 1 ISOPE, 2010. pp. 1003-1010
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N2 - In this study, a numerical model is developed to investigate the wave motion and seabed response around a submerged porous breakwater due to a surface solitary wave. The wave motion is simulated by numerically solving the extended Navier-Stokes (NS) equations, and the seabed response is gained from the numerical solutions of poroelastic theory. The existing wave model (COBRAS) and soil model (PORO-WSSI I) are combined to establish the new model--POROWSSI II. The numerical model is applied to investigate the effects of porosity and equivalent mean diameter of porous media on the wave propagation in the vicinity of porous structure. The results show that the porosity has more impact than equivalent mean diameter on the wave transformation and flow structure. The solitary wave-induced seabed responses such as pore pressure and vertical effective stress around the foundation of porous breakwater are presented as a case study.

AB - In this study, a numerical model is developed to investigate the wave motion and seabed response around a submerged porous breakwater due to a surface solitary wave. The wave motion is simulated by numerically solving the extended Navier-Stokes (NS) equations, and the seabed response is gained from the numerical solutions of poroelastic theory. The existing wave model (COBRAS) and soil model (PORO-WSSI I) are combined to establish the new model--POROWSSI II. The numerical model is applied to investigate the effects of porosity and equivalent mean diameter of porous media on the wave propagation in the vicinity of porous structure. The results show that the porosity has more impact than equivalent mean diameter on the wave transformation and flow structure. The solitary wave-induced seabed responses such as pore pressure and vertical effective stress around the foundation of porous breakwater are presented as a case study.

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KW - seabed response

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BT - The Proceedings of The Twentieth (2010) International Offshore and Polar Engineering Conference

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