ODE solver not running full time span

I have never encountered this issue before but I am solving a large system with ode15s and have specified a tspan of 0:0.01:360 but the solver is only outputting solutions up to t=321.6. I'm assuming there is a numerical issue but the solver is not outputting any error. Has anyone else experienced this and found a fix?

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Steven Lord
Steven Lord el 23 de En. de 2023
Editada: Steven Lord el 23 de En. de 2023

0 votos

That suggests to me that you should have received a warning but perhaps you've suppressed it? Something along the lines of "Failure at t=321.6. Unable to meet integration tolerances without reducing the step size below the smallest value allowed (some_small_number) at time t."
Did you turn warning off in your code or turn off specifically the warning with identifier MATLAB:ode15s:IntegrationTolNotMet?
[Fixed warning identifier to refer to ode15s not ode45.]

3 comentarios

Torsten
Torsten el 23 de En. de 2023
Or you might have defined an event and the code stopped at the time when this event happened ?
Steven Lord
Steven Lord el 23 de En. de 2023
That's another possibility, yes.
Quintessa Hay
Quintessa Hay el 23 de En. de 2023
That was it, the warning was turned off. I don't recall doing this however and didn't even know you could do that. I was working off code by another author edited for my model so it must have been turned off somewhere in there or one of the other codes I was using I suppose. Thanks for the help!

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el 23 de En. de 2023

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el 23 de En. de 2023

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