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<p>Hi all users,</p>
<p>I'm having trouble when configuring the dual flow ventilation
system in TRNFLOW.<br>
</p>
<p>The two fans, as well as the straight ducts are well set.
Everything was fine until I decided to modify the height of the
ventilation system. At first, everything was set at a height of 0
meter. Then I set the auxiliary nodes (one for fresh air and one
for exhausted air) at a height of 2.4m. Furthermore, I set the
height of the straight duct link at 2.4m too (both From-Node and
To-Node). I did that thinking that it would have an impact on
internal convection.<br>
</p>
<p>Now the simulation ends at around 27 hours, saying that
"convergence of the internal iteration of TYPE56 is not atteined
within 100max. number of iterations".</p>
<p>It works only when I put the tolerance of internal iterations at
0.1. But results are not satisfying.</p>
<p>Hopefully one of you did already meet this kind of error...</p>
<p>I attache the following files, so that you can understand what
I've done and what the problems are:</p>
<ul>
<li>modele.cer</li>
<li>modele.b17</li>
</ul>
<p>King regards<br>
</p>
<pre class="moz-signature" cols="72">--
Wirich FREPPEL
Ingenieur Doctorant en Recherche & Developpement
Centre R&D de Noirot - Groupe Muller
8 rue Louis Ampere, 02030 Laon
+33 (0)3 23 27 31 99</pre>
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