Conference paperŠÁTEK Václav, KUNOVSKÝ Jiří and KOPŘIVA Jan. Advanced Stiff Systems Detection. In: Proceedings of the Eleventh International Scientific Conference on Informatics. Rožňava: Faculty of Electrical Engineering and Informatics, University of Technology Košice, 2011, pp. 208212. ISBN 9788089284948.  Publication language:  english 

Original title:  Advanced Stiff Systems Detection 

Title (cs):  Pokročilá detekce tuhých systémů 

Pages:  208212 

Proceedings:  Proceedings of the Eleventh International Scientific Conference on Informatics 

Conference:  Informatics 2011  11th International Scientific Conference on Informatics 

Place:  Rožňava, SK 

Year:  2011 

ISBN:  9788089284948 

Publisher:  Faculty of Electrical Engineering and Informatics, University of Technology Košice 

Keywords 

Stiff systems, Taylor series terms, Modern Taylor Series Method, TKSL 
Annotation 

The paper deals with stiff systems of differential equations. To solve this sort of system numerically is a difficult task. Generally speaking, a stiff system contains several components, some of them are heavily suppressed while the rest remain almost unchanged. This feature forces the used method to choose an extremely small integration step and the progress of the computation may become very slow. However, we often need to find out the solution in a long range. It is clear that the mentioned facts are troublesome and ways to cope with such problems have to be devised. There are many (implicit) methods for solving stiff systems of ordinary differential equations (ODE's), from the most simple such as implicit Euler method to more sophisticated (implicit RungeKutta methods) and finally the general linear methods. The mathematical formulation of the methods often looks clear, however the implicit nature of those methods implies several implementation problems. Usually a quite complicated auxiliary system of equations has to be solved in each step. These facts lead to immense amount of work to be done in each step of the computation. On the other hand a very interesting and promising numerical method of solving systems of ordinary differential equations based on Taylor series has appeared. The question was how to harness the said "Modern Taylor Series Method" for solving of stiff systems. The potential of the Taylor series has been exposed by many practical experiments and a way of detection and solution of large systems of ordinary differential equations has been found. These are the reasons why one has to think twice before using the stiff solver and to decide between the stiff and nonstiff solver. 
BibTeX: 

@INPROCEEDINGS{
author = {V{\'{a}}clav {\v{S}}{\'{a}}tek and
Ji{\v{r}}{\'{i}} Kunovsk{\'{y}} and Jan
Kop{\v{r}}iva},
title = {Advanced Stiff Systems Detection},
pages = {208212},
booktitle = {Proceedings of the Eleventh International Scientific
Conference on Informatics},
year = 2011,
location = {Ro{\v{z}}{\v{n}}ava, SK},
publisher = {Faculty of Electrical Engineering and Informatics,
University of Technology Ko{\v{s}}ice},
ISBN = {9788089284948},
language = {english},
url = {http://www.fit.vutbr.cz/research/view_pub.php?id=9746}
} 
