A Posteriori Error Estimation in a Finite Element Method for Parabolic Partial Differential Equations.
Abstract
Superconvergence properties and quadratic polynomials are used to derive a computationally inexpensive approximation to the spatial component of the error in a piecewise linear finite element method for one-dimensional parabolic partial differential equations. This technique is coupled with time integration schemes of successively higher orders to obtain an approximation of the temporal and total discretization errors. Computational results indicate that these approximations converge to the exact discretization errors as the mesh is refined. The approximate errors are used to control an adaptive mesh refinement strategy. Keywords: Trapezoidal rule; Galerkins method.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1987
- Accession Number
- ADA190296
Entities
People
- J. E. Flaherty
- J. M. Coyle
Organizations
- United States Army Armament Research, Development and Engineering Center