[TRNSYS-users] Coupling COMIS & TRNSYS

[keilholz, werner]

Dear COMIS users, 

 

An increasing number of users contact me about numerical problems running coupled simulations (using COMIS as a TYPE in TRNSYS). 

 

It appears that a good deal of these problems is simply due to an unfortunate default value used in the graphical environment of COMIS: the default solver used for COMIS by Simulation Studio is solver 1 (Newton). This is a good choice for stand-alone COMIS projects. 

 

For coupled projects, however, solver 6 (trust region line search) is more appropriate. 

 

So if you encounter problems running coupled projects, you should just try to 

-          change the solver in the COMIS (*.cpf) project (Assembly/Control cards/Control tab, select "6" under "Solver selector)

-          re-write the COMIS input file (.cif) from the COMIS project (Calculate/Create Input file)

-          Re-run the TRNSYS (.tpf) project

 

Werner Keilholz
TIDS / IIL / Ingénieur

Centre Scientifique et Technique du Bâtiment
84 avenue Jean Jaurès - Champs-sur-Marne - 77447 Marne-la-Vallée Cedex 2
Tél : 04 93 95 67 46
Fax : 04 93 95 67 33
Port : 06 82 93 32 36

Évitez d'imprimer vos emails inutilement. Respectez l'environnement

Ce message et toutes les pièces jointes sont confidentiels et exclusifs pour le destinataire du message. N'importe quelle autre distribution, utilisation ou reproduction est non autorisée et interdite. Si vous receviez ce message par erreur, informez svp l'expéditeur immédiatement et supprimez le message de votre système.

This message and any attachments are confidential, for the exclusive use of the addressee and may be legally privileged. Any other distribution, use or reproduction is unauthorised and prohibited. If you received this message in error, please notify the sender immediately and delete the message from your system.

 





 
 
************************************************************************************
This footnote confirms that this email message has been scanned by
PineApp Mail-SeCure for the presence of malicious code, vandals & computer viruses.
************************************************************************************


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/trnsys-users-onebuilding.org/attachments/20081112/06de2272/attachment-0005.htm>