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American Journal of Applied Sciences
Article . 2013 . Peer-reviewed
Data sources: Crossref
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American Journal of Applied Sciences
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A NON-LINEAR ABSOLUTELY-STABLE EXPLICIT NUMERICAL INTEGRATION ALGORITHM FOR STIFF INITIAL-VALUE PROBLEMS

Authors: null El-Zahar;

A NON-LINEAR ABSOLUTELY-STABLE EXPLICIT NUMERICAL INTEGRATION ALGORITHM FOR STIFF INITIAL-VALUE PROBLEMS

Abstract

The time-step in integration process has two restri ctions. The first one is the time step restriction due to accuracy requirement τac and the second one is the time-step restriction du e to stability requirement τst . The most of explicit methods have small stability regio ns and consequently small τst . It obliges us to solve stiff problems with small step size τst << τac . The implicit methods work well with stiff problem s but these methods require more work per step than the explici t methods. In this study, a non-linear absolutly st able explicit one step numerical integration algorithm i s proposed for solving non linear stiff initial-val ue problems in ordinary differential equations. The al gorithm is based on deriving a non-linear relation between the dependent variable and its derivatives from the well known Taylor expansion. The accuracy of the method depends on some unknown parameter inserted in Taylor expansion and determined from the error analysis. The accuracy and stability properties of the method are investigated and shown to yield at least third order and A-stable. The results obtained in the numerical exp eriments show the efficiency of the present method in solving stiff initial value problems.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average
gold