[TRNSYS-users] digging into trnflow convergence problems

[frodriguezpc at labein.es]

Thanks Mariëlle,

I have unsuccessfully tried several timesteps, from 0.0125 of an hour, to 
0,1 and even one hour, which are obviously too large. The only way I can 
get the simulation finished is to input very large limit velues for 
warning and errors...

I am curious about this thing with interior and exterior temperatures, and 
was wondering if some conclusions about stack performance could be 
extracted from this...

Thanks,

Francisco Rodríguez Pérez-Curiel

TECNALIA-Construcción
Parque Tecnológico, Edificio 700. E-48160 Derio (Bizkaia) (SPAIN)
Tel. +34 94 607 33 00,  Fax. +34 94 607 33 49
francisco.rodriguez at tecnalia.com,
www.tecnalia.com

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Mariëlle Nuchelmans <M.Nuchelmans at chri.nl> 
27/09/2010 08:08

Para
"frodriguezpc at labein.es" <frodriguezpc at labein.es>, 
"trnsys-users at cae.wisc.edu" <trnsys-users at cae.wisc.edu>
cc

Asunto
RE: [TRNSYS-users] digging into trnflow convergence problems






Maybe you have already tried it, but you can make your simulation time 
step smaller (in steps of 1/(2^n))
 
Kind regards,
 
Mariëlle 
 
Van: frodriguezpc at labein.es [mailto:frodriguezpc at labein.es] 
Verzonden: maandag 27 september 2010 6:24
Aan: trnsys-users at cae.wisc.edu
Onderwerp: [TRNSYS-users] digging into trnflow convergence problems
 

Dear all: 

I am working on a trnflow simulation (an apartment with passive stack 
exhausts), and having some convergence problems. After looking at it I 
have found these problems occur whenever the outside temperature gets 
significantly higher than the interior temperature, as you can see in the 
attached image. Any suggestion on how to deal with this? 

Thanks, 



Francisco Rodríguez Pérez-Curiel

TECNALIA-Construcción
Parque Tecnológico, Edificio 700. E-48160 Derio (Bizkaia) (SPAIN)
Tel. +34 94 607 33 00,  Fax. +34 94 607 33 49
francisco.rodriguez at tecnalia.com,
www.tecnalia.com

**************** AVISO LEGAL  **************** DISCLAIMER 
******************
Este mensaje es personal y confidencial y su uso no autorizado está 
prohibido legalmente. Si usted no es el destinatario, proceda a borrarlo, 
sin reenviarlo ni conservarlo.
This message is personal and confidential, unauthorised use is legally 
prohibited. If you are not the intended recipient, delete it without 
resending or backing it.
**************************************************************************************




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