Title
Local problems on stars: a posteriori error estimators, convergence, and performance
Abstract
A new computable a posteriori error estimator is introduced, which relies on the solution of small discrete problems on stars. It exhibits built-in flux equilibration and is equivalent to the energy error up to data oscillation without any saturation assumption. A simple adaptive strategy is designed, which simultaneously reduces error and data oscillation, and is shown to converge without mesh pre-adaptation nor explicit knowledge of constants. Numerical experiments reveal a competitive performance, show extremely good effectivity indices, and yield quasi-optimal meshes.
Year
DOI
Venue
2003
10.1090/S0025-5718-02-01463-1
Math. Comput.
Keywords
Field
DocType
posteriori error estimator,new computable,mesh pre-adaptation,explicit knowledge,data oscillation,good effectivity index,energy error,built-in flux equilibration,numerical experiment,stars,competitive performance,convergence,performance.,adaptivity,local problem,. a posteriori error estimators,local problems,performance,oscillations
Convergence (routing),Mathematical optimization,Oscillation,Polygon mesh,Computer simulation,A priori and a posteriori,Numerical analysis,Partial differential equation,Mathematics,Estimator
Journal
Volume
Issue
ISSN
72
243
0025-5718
Citations 
PageRank 
References 
35
4.86
3
Authors
3
Name
Order
Citations
PageRank
Pedro Morin133147.99
Ricardo H. Nochetto2907110.08
Kunibert G. Siebert347151.43