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Any order superconvergence finite volume schemes for 1D general elliptic equations
- Publication Year :
- 2012
-
Abstract
- We present and analyze a finite volume scheme of arbitrary order for elliptic equations in the one-dimensional setting. In this scheme, the control volumes are constructed by using the Gauss points in subintervals of the underlying mesh. We provide a unified proof for the inf-sup condition, and show that our finite volume scheme has optimal convergence rate under the energy and $L^2$ norms of the approximate error. Furthermore, we prove that the derivative error is superconvergent at all Gauss points and in some special case, the convergence rate can reach $h^{2r}$, where $r$ is the polynomial degree of the trial space. All theoretical results are justified by numerical tests.<br />Comment: 24 pages, 6 figures
- Subjects :
- Mathematics - Numerical Analysis
65N30 (Primary) 45N08 (Secondary)
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1207.0566
- Document Type :
- Working Paper