[TRNSYS-users] TRNFLOW convergence problems

[frodriguezpc at labein.es]

Dear Marion,

many thanks for your answer. You are right, this morning I run a shorter 
simulation and saw the problem was related to a sudden increase of airflow 
caused by a window opening schedule. I run another simulation with closed 
windows and it converged, but I realised I have no flow from infiltration. 
I thought this was provided by the "for closed opening" parameters in the 
Large Opening Type Manager. Any suggestion about that?

Also, I modified my window schedule by increasing by 0.02 the opening 
factor each minute and using a short (0.0125) timestep. My simulation does 
not stop, but I still get some convergence problems, probably due to very 
large flows in the kitchen, which also has  stack ventilation... Could 
some unrealistick stack parameter be the cause?

Best regards,

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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