A COUPLED RANS-VOF AND FINITE ELEMENT MODEL FOR WAVE INTERACTION WITH HIGHLY FLEXIBLE VEGETATION

  • Haifei Chen Civil and Environmental Engineering, University of Maine, 5711 Boardman Hall, Orono, ME 04473, USA.
  • Qingping Zou
  • Zhilong Liu Civil and Environmental Engineering, University of Maine, 5711 Boardman Hall, Orono, ME 04473, USA.
Keywords: wave interaction with vegetation, flexible vegetation, large deflection, IHFOAM, OpenFOAM, RANS-VOF, finite element method, immersed boundary method

Abstract

This paper presents a coupled wave-vegetation interaction model suitable for very flexible vegetation with large deflections. The wave hydrodynamics is modeled by a Navier-Stokes flow solver along with a Volume of Fluid surface capturing method. The governing equation for flexible vegetation motion is solved by a Finite Element Method using a semi-implicit time differencing scheme. The coupling between wave hydrodynamics and vegetation motion is achieved using an immersed boundary method. The model is validated with experimental measurements for a single-stem vegetation and a large-scale vegetation patch in a wave flume.

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Published
2017-06-23
How to Cite
Chen, H., Zou, Q., & Liu, Z. (2017). A COUPLED RANS-VOF AND FINITE ELEMENT MODEL FOR WAVE INTERACTION WITH HIGHLY FLEXIBLE VEGETATION. Coastal Engineering Proceedings, 1(35), waves.25. https://doi.org/10.9753/icce.v35.waves.25