Abstract
In this note we introduce a mixed dimensional Stokes-Darcy coupling where a d dimensional Stokes’ flow is coupled to a Darcy model on the d − 1 dimensional boundary of the domain. The porous layer introduces tangential creeping flow along the boundary and allows for the modelling of boundary flow due to surface roughness. This leads to a new model of flow in fracture networks with reservoirs in an impenetrable bulk matrix. Exploiting this modelling capability, we then formulate a fluid-structure interaction method with contact, where the porous layer allows for mechanically consistent contact and release. Physical seepage in the contact zone due to rough surfaces is modelled by the porous layer. Some numerical examples are reported, both on the Stokes’-Darcy coupling alone and on the fluid-structure interaction with contact in the porous boundary layer.
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Acknowledgements
Erik Burman was partially supported by the EPSRC grant: EP/P01576X/1. Stefan Frei acknowledges support by the DFG Research Scholarship FR3935/1-1.
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Burman, E., Fernández, M.A., Frei, S., Gerosa, F.M. (2021). 3D-2D Stokes-Darcy Coupling for the Modelling of Seepage with an Application to Fluid-Structure Interaction with Contact. In: Vermolen, F.J., Vuik, C. (eds) Numerical Mathematics and Advanced Applications ENUMATH 2019. Lecture Notes in Computational Science and Engineering, vol 139. Springer, Cham. https://doi.org/10.1007/978-3-030-55874-1_20
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DOI: https://doi.org/10.1007/978-3-030-55874-1_20
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