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Discontinuous Galerkin Isogeometric Analysis of Elliptic PDEs on Surfaces

Isogeometric analysis uses the same class of basis functions for both, representing the geometry of the computational domain and approximating the solution. In practical applications, geometrical patches are used in order to get flexibility in the geometrical representation. This patch representation corresponds to a domain decomposition. In this paper, we present for the first time a Discontinuous Galerkin (DG) Method that allows for discontinuities only along the sub-domain (patch) boundaries. The required smoothness is obtained by the DG terms associated with the boundary of the sub-domains. The construction and corresponding discretization error analysis of such DG scheme is presented for Elliptic PDEs in a 2D as well as on open and closed surfaces. Furthermore, we present numerical results to confirm the theory presented.

preprint2014arXivOpen access
Ulrich LangerStephen Edward Moore
math.NA
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Ulrich LangerStephen Edward Moore

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