scholarly journals Energy norm based a posteriori error estimation for boundary element methods in two dimensions

2009 ◽  
Vol 59 (11) ◽  
pp. 2713-2734 ◽  
Author(s):  
C. Erath ◽  
S. Ferraz-Leite ◽  
S. Funken ◽  
D. Praetorius
Keyword(s):  
Boundary Element ◽  
Error Estimation ◽  
Posteriori Error ◽  
Two Dimensions ◽  
A Posteriori Error Estimation ◽  
Boundary Element Methods ◽  
Energy Norm ◽  
A Posteriori ◽  
Posteriori Error Estimation ◽  
A Posteriori Error

scholarly journals ENERGY NORM A POSTERIORI ERROR ESTIMATION OF hp-ADAPTIVE DISCONTINUOUS GALERKIN METHODS FOR ELLIPTIC PROBLEMS

2007 ◽  
Vol 17 (01) ◽  
pp. 33-62 ◽  
Author(s):  
PAUL HOUSTON ◽  
DOMINIK SCHÖTZAU ◽  
THOMAS P. WIHLER
Keyword(s):  
Discontinuous Galerkin ◽  
Error Estimation ◽  
Elliptic Boundary ◽  
Posteriori Error ◽  
A Posteriori Error Estimation ◽  
Energy Norm ◽  
Upper And Lower Bounds ◽  
A Posteriori ◽  
Posteriori Error Estimation ◽  
A Posteriori Error

In this paper, we develop the a posteriori error estimation of hp-version interior penalty discontinuous Galerkin discretizations of elliptic boundary-value problems. Computable upper and lower bounds on the error measured in terms of a natural (mesh-dependent) energy norm are derived. The bounds are explicit in the local mesh sizes and approximation orders. A series of numerical experiments illustrate the performance of the proposed estimators within an automatic hp-adaptive refinement procedure.

scholarly journals ENERGY NORM A POSTERIORI ERROR ESTIMATION FOR hp-ADAPTIVE DISCONTINUOUS GALERKIN METHODS FOR ELLIPTIC PROBLEMS IN THREE DIMENSIONS

2011 ◽  
Vol 21 (02) ◽  
pp. 267-306 ◽  
Author(s):  
LIANG ZHU ◽  
STEFANO GIANI ◽  
PAUL HOUSTON ◽  
DOMINIK SCHÖTZAU
Keyword(s):  
Discontinuous Galerkin ◽  
Error Estimation ◽  
Elliptic Boundary ◽  
Posteriori Error ◽  
A Posteriori Error Estimation ◽  
Three Dimensions ◽  
Energy Norm ◽  
A Posteriori ◽  
Posteriori Error Estimation ◽  
A Posteriori Error

We develop the energy norm a posteriori error estimation for hp-version discontinuous Galerkin (DG) discretizations of elliptic boundary-value problems on 1-irregularly, isotropically refined affine hexahedral meshes in three dimensions. We derive a reliable and efficient indicator for the error measured in terms of the natural energy norm. The ratio of the efficiency and reliability constants is independent of the local mesh sizes and weakly depending on the polynomial degrees. In our analysis we make use of an hp-version averaging operator in three dimensions, which we explicitly construct and analyze. We use our error indicator in an hp-adaptive refinement algorithm and illustrate its practical performance in a series of numerical examples. Our numerical results indicate that exponential rates of convergence are achieved for problems with smooth solutions, as well as for problems with isotropic corner singularities.

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