[scilab-Users] Regarding solvers in scilab

[Jerome PICARD]

Hello,

The solvers in Xcos are the Sundials' solvers.
You have the choice between CVODE and IDA.

The solver used by default is CVODE which solves ordinary differential 
equations with initial value  : y'(t) = f(y(t),t).

IDA is more general. It is able to solve implicit differential equations 
: f(y'(t),y(t),t) = 0.

In most cases, the first algorithm is enough to solve differential 
equations. In general, problems deals with ordinary
differential equations.

We do not change the solver with number. You just have to choose in the 
list CVODE or IDA.
Below the choice of the solver, the number corresponds to the maximum 
number of steps.
By default, this number is equal to 0 to indicate that there is not a 
maximum iteration for the solvers. For the beginning, this number
is not to change. We only change this number if the algorithm fails to 
converge or if the algorithms takes a long time to converge.

Sorry, I do not understand what do you mean with AM2.

Best regards



Le 17/06/2010 17:21, ashwin damle a écrit :
> Hello,
> I want to change the solver in scicos. I read the documentation at 
> sundials' about the solvers CVODE and IDA but I cant figure out about 
> how to change the solver using number 0,1,etc
>
> Lets suppose I wasnt to use AM2 what corresponding number or what 
> should be put in so that
> the numerical integration is AM2
>
> Thank you.
> -- 
> Ashwin M. Damle
>
>


-- 
Jérôme Picard
Ingénieur de développement
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Consortium Scilab
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