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<div class="moz-cite-prefix">Arianna,<br>
<br>
Somewhere in your model there is mass imbalance that is more than
the tolerance allowed within the solver. Usually happens if you
close a flow path using control (e.g. window closes but air is
still being blown into the room from a fan). I would recommend to
check this by removing control and then running the model. Another
way forward is to make a sketch of the flow network and visually
check if a bad flow path occurs given the constraints of the
control you are trying to impose. A usual solution is to always
have a flow path from internal nodes to external ones via small
cracks (which is correct for most situations).<br>
<div class="moz-signature"><br>
</div>
Another (rarer) reason is that you may have two components in
series that have hugely different flow resistances. <br>
<br>
Regards,<br>
Aizaz<br>
<br>
<div class="moz-signature"><br>
</div>
On 22/10/13 12:22, Arianna Sdei wrote:<br>
</div>
<blockquote
cite="mid:43AC8FF96AEAFA43B65D1EDF7FD1C121BC3DA881@ALUDRA.university.brighton.ac.uk"
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<p class="MsoNormal">Dear All,</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I am simulating using an air flow network
and while running the simulation I get the following message:
</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Please check (in the following order) that:</p>
<p class="MsoNormal">-each node has some flow path to a boundary
pressure and</p>
<p class="MsoNormal">-iteration convergence control is not too
strict</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Can someone help me to interpret what that
means and what should I look at in the model? Thank you,</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Arianna </p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"><b><span>Arianna Sdei</span></b><span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal"><span>Research Fellow IFORE (Innovation For
Renewal)
</span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal"><span>UNIVERSITY OF BRIGHTON</span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal"><span>Moulsecoomb, Lewes Road, Brighton,
BN2 4AT</span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal"><span>direct line: 0044 (0)2036747268</span></p>
<p class="MsoNormal"><b><span> </span></b></p>
<p class="MsoNormal"><span>mobile: 0044 (0)7981739024</span></p>
<p class="MsoNormal"><b><span> </span></b></p>
<p class="MsoNormal"> </p>
</div>
<br>
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