A hybridizable discontinuous Galerkin method for the coupled Navier-Stokes and Darcy problem

10/13/2022

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by   Aycil Cesmelioglu, et al.

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We present and analyze a strongly conservative hybridizable discontinuous Galerkin finite element method for the coupled incompressible Navier-Stokes and Darcy problem with Beavers-Joseph-Saffman interface condition. An a priori error analysis shows that the velocity error does not depend on the pressure, and that velocity and pressure converge with optimal rates. These results are confirmed by numerical examples.