Spectral Numerical Exterior Calculus Methods for Differential Equations on Radial Manifolds
Journal Article
·
· Journal of Scientific Computing
- Univ. of California, Santa Barbara, CA (United States); US Department of Energy
- Univ. of California, Santa Barbara, CA (United States)
We develop exterior calculus approaches for partial differential equations on radial manifolds. We introduce numerical methods that approximate with spectral accuracy the exterior derivative \(\mathbf {d}\), Hodge star \(\star \), and their compositions. To achieve discretizations with high precision and symmetry, we develop hyperinterpolation methods based on spherical harmonics and Lebedev quadrature. We perform convergence studies of our numerical exterior derivative operator \(\overline{\mathbf {d}}\) and Hodge star operator \(\overline{\star }\) showing each converge spectrally to \(\mathbf {d}\) and \(\star \). We demonstrate how the numerical operators can be naturally composed to formulate general numerical approximations for solving differential equations on manifolds. We introduce findings for the Laplace–Beltrami equations demonstrating our approach.
- Research Organization:
- Univ. of California, Santa Barbara, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21)
- Grant/Contract Number:
- SC0009254
- OSTI ID:
- 1633907
- Journal Information:
- Journal of Scientific Computing, Journal Name: Journal of Scientific Computing Journal Issue: 1 Vol. 76; ISSN 0885-7474
- Publisher:
- SpringerCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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