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Hannes, I had a very quick look
at your project only. Without knowing the aim
of the simulation, your project looks quite complicated to me because you divided
the church into many airnodes. Is this really necessary?
Do you expect different temperatures for each airnode? For thermal modelling I
assume that three to four airnodes would be enough. Using more airnodes
increase the complexity significant
as well as the input and control effort without necessarily an increase in
accuracy. In addition, I wonder if
you really need a detailed distribution model for direct radiation. I assume
that GEOSURF yield to a good result. For evaluating air flow in
large volumes you need CFD rather than a network flow tool like TRNFlow. The resulting stratification
really depends on local airstreams raising /falling and you need a discretisation
of the volume. I doubt that TRNFlow gives
you the exoected result. In addition, the CFD would
be able to show you how many thermal airnodes are really required. I really recommend beginning
with a simple model. If the simple model works fine you may become more detailed and verify
that add adding detail really increases the accuracy of your model. Marion Dipl.-Ing.
Geschäftsführer:
Dipl.Ing. Matthias Schuler, Dipl.Ing. Thomas Auer, Dipl.Phys. Stefan Holst,
Prof. Dipl.-Ing. Bleicher Von: Hannes Oppeel
[mailto:hoppeel@hotmail.com] Hi all I'm having a problem with trnflow in the church I'm
currently modeling: whenever I switch on trnflow I get a range check error. When I take a look in the listfile it says: ***** WARNING ***** UNIT 14 TYPE 56, TIME = 5.000E+00 COMIS MESSAGE ***** ERROR ***** Ventilation network solver reached maximum number of
Jacobian factorizations. Increase &-PR-CONTrol Miter, or adjust the
network. VENTILATION NETWORK SOLVER REPORTS ERROR There were too many iterations. The maximum allowed (see *CIF &-PR-CONTrol) is:
50 Any ideas what the problem could be, or how I can change
the maximum alowed iterations? Please help! It's urgent! Hannes Oppeel |