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Philipp,<br>
The solver within CONTAM and the solver within Type97 are different
from one another; Type97 is a snapshot of what CONTAM was some years
ago (2002?) rewritten in Fortran. <br>
Regards,<br>
David<br>
<br>
<br>
On 10/15/2010 09:55, Philipp Lezajic wrote:
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style="font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; font-size-adjust: inherit; font-stretch: inherit; font-family: arial; font-size: 10pt;">Hi,<br>
<br>
when using the "shaft" airflowpath in a building model in CONTAM I get
different massflows compared to using the model via type 97 in TRNSYS.
I use the "steady" simulation mode in CONTAM and aply the same
parameters (zone-temp, amb-temp, amb-pressure,etc.) to type 97 as
inputs. For other airflowpaths (like the two way flow -- two opening
used in the calling CONTAM example) the massflows are equal in TRNSYS
and CONTAM. <br>
The difference is not very big for one shaft airflowpath, but as my
building model has several zones on top of each other connected with
shaft airflowpaths (an atrium) the difference in my case is around 5%.<br>
<br>
<br>
Is there a difference because CONTAM and TRNSYS solve the same equation
system with a different solver? How can this difference be rated? Are
there any parameters in under Control Cards in the Simulation studio
that I can adapt?<br>
<br>
Again thanks in advance to everyone for help or advice!<br>
<br>
regards Philipp<br>
<br>
<br>
<br>
<br>
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<pre class="moz-signature" cols="72">--
***************************
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
<a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
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