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Diagonally Implicit Runge-Kutta Methods for Ordinary Differential Equations. A ReviewA review of diagonally implicit Runge-Kutta (DIRK) methods applied to rst-order ordinary di erential equations (ODEs) is undertaken. The goal of this review is to summarize the characteristics, assess the potential, and then design several nearly optimal, general purpose, DIRK-type methods. Over 20 important aspects of DIRKtype methods are reviewed. A design study is then conducted on DIRK-type methods having from two to seven implicit stages. From this, 15 schemes are selected for general purpose application. Testing of the 15 chosen methods is done on three singular perturbation problems. Based on the review of method characteristics, these methods focus on having a stage order of two, sti accuracy, L-stability, high quality embedded and dense-output methods, small magnitudes of the algebraic stability matrix eigenvalues, small values of aii, and small or vanishing values of the internal stability function for large eigenvalues of the Jacobian. Among the 15 new methods, ESDIRK4(3)6L[2]SA is recommended as a good default method for solving sti problems at moderate error tolerances.
Document ID
20160005923
Document Type
Technical Memorandum (TM)
Authors
Kennedy, Christopher A.
Carpenter, Mark H. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
May 6, 2016
Publication Date
March 1, 2016
Subject Category
Mathematical and Computer Sciences (General)
Report/Patent Number
NF1676L-19716
NASA/TM-2016-219173
L-20597
L-20470
Funding Number(s)
WBS: WBS 794072.02.07.02.01
Distribution Limits
Public
Copyright
Public Use Permitted.

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