Numerical convergence of discrete exterior calculus on arbitrary surface meshes
KAUST DepartmentFluid and Plasma Simulation Group (FPS)
Mechanical Engineering Program
Physical Science and Engineering (PSE) Division
KAUST Grant NumberURF/1/1401-01-01
Preprint Posting Date2018-02-13
Permanent link to this recordhttp://hdl.handle.net/10754/627178
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AbstractDiscrete exterior calculus (DEC) is a structure-preserving numerical framework for partial differential equations solution, particularly suitable for simplicial meshes. A longstanding and widespread assumption has been that DEC requires special (Delaunay) triangulations, which complicated the mesh generation process especially for curved surfaces. This paper presents numerical evidence demonstrating that this restriction is unnecessary. Convergence experiments are carried out for various physical problems using both Delaunay and non-Delaunay triangulations. Signed diagonal definition for the key DEC operator (Hodge star) is adopted. The errors converge as expected for all considered meshes and experiments. This relieves the DEC paradigm from unnecessary triangulation limitation.
CitationMohamed MS, Hirani AN, Samtaney R (2018) Numerical convergence of discrete exterior calculus on arbitrary surface meshes. International Journal for Computational Methods in Engineering Science and Mechanics: 1–13. Available: http://dx.doi.org/10.1080/15502287.2018.1446196.
SponsorsThis research was supported by the KAUST Office of Competitive Research Funds under Award No. URF/1/1401-01-01.
PublisherInforma UK Limited