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# Superconvergent H(div)-conforming HDG methods for the Brinkman equations September 26, 2017 - 10:00am - 11:00am Computational Mathematics Seminar

### Speaker Information

Guosheng Fu

Brown University

We present new parameter-free superconvergent H(div)-conforming HDG methods for the Brinkman equations on both simplicial and rectangular meshes using a velocity gradient-velocity-pressure formulation. We obtain an optimal L2-error estimate for the velocity in both the Stokes-dominated and Darcy-dominated regimes. We also obtain superconvergent L2-estimate of one order higher for a suitable projection of the velocity error in the Stokes-dominated regime. Moreover, thanks to H(div)-conformity of the velocity, the velocity error estimates are independent of the pressure regularity.