Publications Meetings The Profession Membership Programs Math Samplings Policy & Advocacy In the News About the AMS

   
Mobile Device Pairing
Green Open Access
Mathematics of Computation
Mathematics of Computation
ISSN 1088-6842(online) ISSN 0025-5718(print)

 

Runge-Kutta methods and local uniform grid refinement


Authors: R. A. Trompert and J. G. Verwer
Journal: Math. Comp. 60 (1993), 591-616
MSC: Primary 65M50; Secondary 65L06, 65M20
MathSciNet review: 1181332
Full-text PDF Free Access

Abstract | References | Similar Articles | Additional Information

Abstract: Local uniform grid refinement (LUGR) is an adaptive grid technique for computing solutions of partial differential equations possessing sharp spatial transitions. Using nested, finer-and-finer uniform subgrids, the LUGR technique refines the space grid locally around these transitions, so as to avoid discretization on a very fine grid covering the entire physical domain. This paper examines the LUGR technique for time-dependent problems when combined with static regridding. Static regridding means that in the course of the time evolution, the space grid is adapted at discrete times. The present paper considers the general class of Runge-Kutta methods for the numerical time integration. Following the method of lines approach, we develop a mathematical framework for the general Runge-Kutta LUGR method applied to multispace-dimensional problems. We hereby focus on parabolic problems, but a considerable part of the examination applies to hyperbolic problems as well. Much attention is paid to the local error analysis. The central issue here is a "refinement condition" which is to underly the refinement strategy. By obeying this condition, spatial interpolation errors are controlled in a manner that the spatial accuracy obtained is comparable to the spatial accuracy on the finest grid if this grid would be used without any adaptation. A diagonally implicit Runge-Kutta method is discussed for illustration purposes, both theoretically and numerically.


References [Enhancements On Off] (What's this?)


Similar Articles

Retrieve articles in Mathematics of Computation with MSC: 65M50, 65L06, 65M20

Retrieve articles in all journals with MSC: 65M50, 65L06, 65M20


Additional Information

DOI: http://dx.doi.org/10.1090/S0025-5718-1993-1181332-3
PII: S 0025-5718(1993)1181332-3
Keywords: Partial differential equations, numerical mathematics, time-dependent problems, Runge-Kutta methods, adaptive grid methods, error analysis
Article copyright: © Copyright 1993 American Mathematical Society