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Title: The nonconforming Virtual Element Method for eigenvalue problems

Journal Article · · Mathematical Modelling and Numerical Analysis
 [1]; ORCiD logo [2];  [3]
  1. Università di Pavia (Italy)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Univ. degli Studi di Milano Bicocca (Italy)

In this work, we analyse the nonconforming Virtual Element Method (VEM) for the approximation of elliptic eigenvalue problems. The nonconforming VEM allows to treat in the same formulation the two- and three-dimensional case. We present two possible formulations of the discrete problem, derived respectively by the nonstabilized and stabilized approximation of the $L^2$-inner product, and we study the convergence properties of the corresponding discrete eigenvalue problem. The proposed schemes provide a correct approximation of the spectrum, in particular we prove optimal-order error estimates for the eigenfunctions and the usual double order of convergence of the eigenvalues. Finally we show a large set of numerical tests supporting the theoretical results, including a comparison with the conforming Virtual Element choice.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
European Research Council (ERC); USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); USDOE Office of Science (SC), Fusion Energy Sciences (FES)
Grant/Contract Number:
89233218CNA000001; AC52-06NA25396
OSTI ID:
1844151
Report Number(s):
LA-UR-20-27582
Journal Information:
Mathematical Modelling and Numerical Analysis, Journal Name: Mathematical Modelling and Numerical Analysis Journal Issue: 3 Vol. 53; ISSN 0764-583X
Publisher:
EDP SciencesCopyright Statement
Country of Publication:
United States
Language:
English

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A priori error analysis for a mixed VEM discretization of the spectral problem for the Laplacian operator journal April 2021
A virtual element approximation for the pseudostress formulation of the Stokes eigenvalue problem text January 2020
Sharper error estimates for Virtual Elements and a bubble-enriched version preprint January 2020
A virtual element method for the Steklov eigenvalue problem allowing small edges preprint January 2020
Virtual element approximation of eigenvalue problems preprint January 2020
The conforming virtual element method for polyharmonic and elastodynamics problems: a review preprint January 2021
Stabilization of the nonconforming virtual element method preprint January 2021
A nonconforming Trefftz virtual element method for the Helmholtz problem journal August 2019
A nonconforming Trefftz virtual element method for the Helmholtz problem preprint January 2018