Simon,
You can start a simulation at non whole numbers but in this case
you have to be very careful about the difference in output devices
between "relative time" and "absolute time" Many printing and
integrating devices give you a choice. If you choose relative time
and integrate hourly, you will get results that are in one hour
intervals starting at whatever simulation start time you choose:
time = 1.1, 2.1, 3.1, 4.1, ... If, on the other hand, you choose
absolute time and integrate hourly then the first integration period
won't be a full hour. Your intervals will be time = 1.1, 2, 3, 4,
...
And of course your simulation start time must be an integer multiple
of your timestep. You cannot, for example, have a timestep of 1 hour
and a start time of 1.1.
Regards,
David
On 6/25/2012 03:00, Simon Binnemans wrote:
Dear Trnsys user,
When I start a
simulation and I do not set the simulation start time to a
whole number (not hour 1 but hour 1.1 for example) I get
very strange simulation results.
Attached I did a basic
simulation where you can see the problem by comparing the
simulation results with a start time of 0 hour and a start
time of 0.1 hour for example.
Does anyone know if it
is always necessary to set the simulation start hour to a
whole number?
Thank you for your help,
Simon Binnemans
_______________________________________________
TRNSYS-users mailing list
TRNSYS-users@cae.wisc.edu
https://mailman.cae.wisc.edu/listinfo/trnsys-users
--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
d.bradley@tess-inc.com
http://www.tess-inc.com
http://www.trnsys.com
|