[TRNSYS-users] ERROR: simulation times

[Matt Duffy]

Also, please be careful with the equation in that SDHW example. There is
an equation in the block called "new" which has reference to some  of the
time variables...

  new = time/(time-start-2000)

It was causing another user some errors when they tried to change the some
of the simulation parameters.

For your information, "time" or "TIME" is a TRNSYS keword that is built
into the TRNSYS kernel, and  "start", and "stop" are string names that the
TRNSYS Simulation Studio names.

Best regards,

Matt Duffy


----- Original Message -----
From: "David Bradley" <bradley at tess-inc.com>
Sent: Fri, July 10, 2009 12:00
Subject:Re: [TRNSYS-users] ERROR: simulation times

TRNSYS uses the units of hours of the year for simulating. When you
change the units of the start and stop time in the control cards, Studio
converts the numbers that you choose back to hours of the year before
writing the input file. There are sometimes some rounding errors when it
does so. The error you got is probably telling you that the time step is
not an integer multiple of the start time. To be safe, I do not
recommend changing those units.
Regards,
David


dias.marcos at portugalmail.pt wrote:
> Hi,
>
> I'm finding some problems when i change the simulation times parameters.
> I opened the SDHW example to test this. I run the simulation and it goes
OK.
>
> The parameters defined where:
> Simulation star time: 3624 hr
> Simulation stop time: 5088 hr
> Simulation time step: 0.25 hr
>
> Then, i go to "Assembly -> Control Cards" and change this parameters to:
> Simulation star time: 1 day
> Simulation stop time: 150 day
> Simulation time step: 1 hr
>
> and it appears this error message: "One error was found in the deck.
> Check the listing file for more informations."
>
> Can anyone tell me what is wrong?
>
> Thanks!
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users
>
>
>
>

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