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Num. Meth. Prog., 2007, Volume 8, Issue 4, Pages 317–325 (Mi vmp497)  

Вычислительные методы и приложения

An algorithm of variable order and step based on stages of the Dormand-Prince method of the eighth order of accuracy

A. E. Novikova, E. A. Novikovb

a Siberian Federal University, Krasnoyarsk
b Institute of Computational Modelling, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk

Abstract: An inequality is obtained to control the stability of the 13-stage Dormand-Prince method of the eighth order of accuracy. A first-order method with an expanded stability domain is proposed on the basis of the first seven stages. An algorithm of variable order is formulated. Some numerical results for stiff systems are discussed; these results confirm an efficiency increase of the variable-order method in comparison with a fixed-order scheme.

Keywords: stiff systems, explicit methods, stability and accuracy control, variable order methods, ordinary differential equations, one-step difference methods.

Full text: PDF file (317 kB)
UDC: 519.622

Citation: A. E. Novikov, E. A. Novikov, “An algorithm of variable order and step based on stages of the Dormand-Prince method of the eighth order of accuracy”, Num. Meth. Prog., 8:4 (2007), 317–325

Citation in format AMSBIB
\Bibitem{NovNov07}
\by A.~E.~Novikov, E.~A.~Novikov
\paper An algorithm of variable order and step based on stages of the Dormand-Prince method of the eighth order of accuracy
\jour Num. Meth. Prog.
\yr 2007
\vol 8
\issue 4
\pages 317--325
\mathnet{http://mi.mathnet.ru/vmp497}


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