CFD-CSD NUMERICAL MODELLING OF WAVE-INDUCED PRESSURES IN OPEN- PORED PBA-REVETMENTS

  • Juan Carlos Alcerreca Huerta Leichtweiß-Institute for Hydraulic Engineering and Water Resources
  • Hocine Oumeraci Leichtweiß-Institute for Hydraulic Engineering and Water Resources
Keywords: porous bonded revetments, wave-induced pressures, numerical modelling, OpenFOAM

Abstract

The highly porous Polyurethane Bonded Aggregates (PBA) revetments represent a novel ecologically friendly solution for the protection of shorelines and vulnerable coastal areas against erosion. Advantages of the open-pored PBA-revetments over conventional smooth impermeable revetments are among others, the reduction of: wave run- up/run-down, wave reflection and wave-induced loads on the sand core beneath the revetment. However, the hydro- geotechnical processes involved in the interaction of waves with such PBA-revetments and their foundation are still not sufficiently understood. Therefore, a new 3-dimensional one-way coupled CFD-CSD model system "wavePoreGeoFoam" was developed at the Leichtweiß-Institute (LWI) within the OpenFOAM® framework for the analysis of the response of open-pored PBA-revetments due to wave-induced loads. In this way, this paper firstly describes the new CFD-CSD model system. Second, validation of the model "wavePoreGeoFoam" is shown considering large-scale laboratory tests performed in the Large Wave Flume (GWK) at the Coastal Research Center (FZK) in Hanover, Germany (Oumeraci et al. 2010). Third, the relevance of implementing the CFD-CSD coupling for modelling wave-induced pressures on and beneath PBA-revetments is discussed. Fourth, a sensitivity analysis related to the effect of the empirically defined parameters for the numerical model is described. Finally, recommendations and implications of the use of CFD-CSD model for further research will be addressed.

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Published
2014-10-02
How to Cite
Alcerreca Huerta, J. C., & Oumeraci, H. (2014). CFD-CSD NUMERICAL MODELLING OF WAVE-INDUCED PRESSURES IN OPEN- PORED PBA-REVETMENTS. Coastal Engineering Proceedings, 1(34), structures.18. https://doi.org/10.9753/icce.v34.structures.18