A virtual element generalization on polygonal meshes of the Scott-Vogelius finite element method for the 2-D Stokes problem
Journal Article
·
· Journal of Computational Dynamics
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Universita di Padova (Italy)
The Virtual Element Method (VEM) is a Galerkin approximation method that extends the Finite Element Method (FEM) to polytopal meshes. In this paper, we present a conforming formulation that generalizes the Scott-Vogelius finite element method for the numerical approximation of the Stokes problem to polygonal meshes in the framework of the virtual element method. In particular, we consider a straightforward application of the virtual element approximation space for scalar elliptic problems to the vector case and approximate the pressure variable through discontinuous polynomials. We assess the effectiveness of the numerical approximation by investigating the convergence on a manufactured solution problem and a set of representative polygonal meshes. Finally, we numerically show that this formulation is convergent with optimal convergence rates except for the lowest-order case on triangular meshes, where the method coincides with the $$\mathbb{P}_1$$ – $$\mathbb{P}_0$$ Scott-Vogelius scheme, and on square meshes, which are situations that are well-known to be unstable.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- 89233218CNA000001
- OSTI ID:
- 1844157
- Report Number(s):
- LA-UR-21-22961
- Journal Information:
- Journal of Computational Dynamics, Journal Name: Journal of Computational Dynamics Journal Issue: 2 Vol. 9; ISSN 2158-2491
- Publisher:
- American Institute of Mathematical SciencesCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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