The solution of parabolic models by finite element space and A-stable time discretization

1979 ◽  
pp. 300-308
Author(s):  
J. Nedoma
Keyword(s):  
Finite Element ◽  
Time Discretization ◽  
Element Space ◽  
Finite Element Space

An improved finite element space for discontinuous pressures

2010 ◽  
Vol 199 (17-20) ◽  
pp. 1019-1031 ◽  
Author(s):  
Roberto F. Ausas ◽  
Fabrício S. Sousa ◽  
Gustavo C. Buscaglia
Keyword(s):  
Finite Element ◽  
Element Space ◽  
Finite Element Space

A Unified Topological Layer for Finite Element Space Discretization

2010 ◽  
Author(s):  
Franz Stimpfl ◽  
Josef Weinbub ◽  
René Heinzl ◽  
Philipp Schwaha ◽  
Siegfried Selberherr ◽  
...  
Keyword(s):  
Finite Element ◽  
Element Space ◽  
Finite Element Space ◽  
Space Discretization

Some algorithms of the projective-Newton method for the finite element space

1987 ◽  
Vol 9 (1) ◽  
pp. 1-12
Author(s):  
G. Hobot ◽  
T. Pokora ◽  
A. R. Mitchell
Keyword(s):  
Finite Element ◽  
Newton Method ◽  
Element Space ◽  
Finite Element Space

Edge Patch-Wise Local Projection Stabilized Nonconforming FEM for the Oseen Problem

2019 ◽  
Vol 19 (2) ◽  
pp. 189-214 ◽  
Author(s):  
Rahul Biswas ◽  
Asha K. Dond ◽  
Thirupathi Gudi
Keyword(s):  
Finite Element ◽  
Finite Element Approximation ◽  
Element Approximation ◽  
Nonconforming Finite Element ◽  
Polynomial Space ◽  
Element Space ◽  
Piecewise Constant ◽  
Local Projection ◽  
Finite Element Space ◽  
Oseen Problem

AbstractIn finite element approximation of the Oseen problem, one needs to handle two major difficulties, namely, the lack of stability due to convection dominance and the incompatibility between the approximating finite element spaces for the velocity and the pressure. These difficulties are addressed in this article by using an edge patch-wise local projection (EPLP) stabilization technique. The article analyses the EPLP stabilized nonconforming finite element methods for the Oseen problem. For approximating the velocity, the lowest-order Crouzeix–Raviart (CR) nonconforming finite element space is considered; whereas for approximating the pressure, two discrete spaces are considered, namely, the piecewise constant polynomial space and the lowest-order CR finite element space. The proposed discrete weak formulation is a combination of the standard Galerkin method, EPLP stabilization and weakly imposed boundary condition by using Nitsche’s technique. The resulting bilinear form satisfies an inf-sup condition with respect to EPLP norm, which leads to the well-posedness of the discrete problem. A priori error analysis assures the optimal order of convergence in both the cases, that is, order one in the case of piecewise constant approximation and \frac{3}{2} in the case of CR-finite element approximation for pressure. The numerical experiments illustrate the theoretical findings.

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