Changes between Initial Version and Version 1 of Ticket #5867


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Timestamp:
2020-02-26T08:08:01Z (5 years ago)
Author:
Vitalij Ruge
Comment:

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  • Ticket #5867 – Description

    initial v1  
    33It is planned to add CVODE to FMI/CS; however, this only provides variable step-size solvers with error control. These are fine from the point of view of precision, but they will tend to require many internal steps for each main step of the FMI, because the step changes of the output will trigger fast transients which are totally irrelevant for the output at the end of the step, but that the CVODE solvers will nevertheless try to simulate with great accuracy.
    44
    5 A simple but effective solution could be to have fixed time step implicit Euler also implemented. This will solve most stability problems, since implicit Euler is A-stable.
     5A simple but effective solution could be to have fixed time step implicit Euler also implemented. This will solve most stability problems, since implicit Euler is L-stable.
    66
    77I would therefore recommend that this solution is also implemented for FMI/CS, in addition to CVODE.