Multilevel domain uncertainty quantification in computational electromagnetics

نویسندگان

چکیده

We continue our study [R. Aylwin, C. Jerez-Hanckes, Schwab and J. Zech, Domain uncertainty quantification in computational electromagnetics, SIAM/ASA Uncertain. Quant. 8 (2020) 301–341] of the numerical approximation time-harmonic electromagnetic fields for Maxwell lossy cavity problem uncertain geometries. adopt same affine-parametric shape parametrization framework, mapping physical domains to a nominal polygonal domain with piecewise smooth maps. The regularity pullback solutions on is characterized Sobolev spaces. prove error convergence rates optimize algorithmic steering parameters edge-element discretizations combined with: (a) multilevel Monte Carlo sampling, (b) multilevel, sparse-grid quadrature computing expectation respect ensembles. In addition, we analyze interpolation compute surrogates domain-to-solution mappings. All calculations are performed polyhedral domain, which enables use standard simplicial finite element meshes. provide rigorous fully discrete analysis show, all cases, that dimension-independent algebraic achieved. For methods, higher order free from so-called curse dimensionality. Numerical experiments confirm theoretical results verify superiority methods.

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ژورنال

عنوان ژورنال: Mathematical Models and Methods in Applied Sciences

سال: 2023

ISSN: ['0218-2025', '1793-6314', '1793-4060']

DOI: https://doi.org/10.1142/s0218202523500264