Porous Media and Immersed Boundary Hybrid-Modelling for Simulating Flow in Stone Cover-Layers

Bjarne Jensen, Xiaofeng Liu, Erik Damgaard Christensen, Johan Rønby

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Abstract

In this paper we present a new numerical modelling approach for coastal and marine applications where a porous media conceptual model was combined with a free surface volume-of-fluid (VOF) model and an immersed boundary method (IBM). The immersed boundary model covers the method of describing a solid object in a simple computational mesh without resolving the object with a conventional body-fitted mesh. This model enables a detailed resolution of some parts of a stone cover layer for erosion protection with the IBM model while other parts are handled with the conceptual porosity model. In this paper, the model is applied to investigate two practical cases in terms of a cover layer of stones on a flat bed under oscillatory flow at different packing densities, and a rock toe structure at a breakwater.
Original languageEnglish
Publication date2017
Number of pages12
Publication statusPublished - 2017
EventCoastal Dynamics 2017 - Helsingør, Denmark
Duration: 12 Jun 201716 Jun 2017

Conference

ConferenceCoastal Dynamics 2017
CountryDenmark
CityHelsingør
Period12/06/201716/06/2017

Keywords

  • Erosion protection
  • porous media modelling
  • immersed boundary method
  • Navier-Stokes equations
  • OpenFOAM

Cite this

Jensen, B., Liu, X., Christensen, E. D., & Rønby, J. (2017). Porous Media and Immersed Boundary Hybrid-Modelling for Simulating Flow in Stone Cover-Layers. Paper presented at Coastal Dynamics 2017, Helsingør, Denmark.