Zobrazeno 1 - 5
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pro vyhledávání: '"DIFENG CAI"'
Publikováno v:
Numerische Mathematik. 144:1-21
We present a patch-based equilibrated flux recovery procedure for the conforming finite element approximation to diffusion problems. The recovered flux is computed as the solution to a local constraint-free minimization problem on each patch. The app
Autor:
Panayot S. Vassilevski, Difeng Cai
Publikováno v:
Computational Methods in Applied Mathematics. 20:61-78
We study approximations of eigenvalue problems for integral operators associated with kernel functions of exponential type. We show convergence rate | λ k - λ k , h | ≤ C k h 2 {\lvert\lambda_{k}-\lambda_{k,h}\rvert\leq C_{k}h^{2}} in the cas
Autor:
Difeng Cai, Zhiqiang Cai
Publikováno v:
Computer Methods in Applied Mechanics and Engineering. 339:320-340
This paper introduces a hybrid a posteriori error estimator for the conforming finite element method, which may be regarded as a combination of the explicit residual and the improved ZZ error estimators. With comparable cost, the hybrid estimator is
Publikováno v:
Journal of Scientific Computing. 83
This paper introduces and analyzes an equilibrated a posteriori error estimator for mixed finite element approximations to the diffusion problem in two dimensions. The estimator, which is a generalization of those in Braess and Schoberl (Math Comput
Publikováno v:
Numerical Linear Algebra with Applications. 25