skade eaction ffusion ne-dimensional System - ZIB
skade eaction ffusion ne-dimensional System - ZIB
skade eaction ffusion ne-dimensional System - ZIB
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paceTol<br />
The final grid is used for solving the other elliptc problems too. Only o<strong>ne</strong><br />
grid is appled for all unknowns of the ystem<br />
Setting the parameter globTol, KARDOS ontrols the space and time is<br />
retization due t he special tolerances<br />
aceTol = globTol/3.0 , timeTol = globTol/0 .<br />
This specific splitting results from the chosen parameters of the method. O<br />
the other hand, the parameters spaceTol and timTol allow specal tuning,<br />
desired. For more details see LANG/WALTER [4,]<br />
In the case of inconsisent sarting values for differential-algebraic systems<br />
it is possible to use an implicit Euler method in the firt time step coupled<br />
with a damped Newton thod.<br />
As a program, which handles a very ge<strong>ne</strong>ral class of problems, KARDOS<br />
cannot succed for all problems. Experiments have hown, that the compuations<br />
have often been improved settng the paramters ery carefully. In<br />
reme cases the iterativ olver may fail
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