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<p>Dear all,</p>
<p>I was wondering if it is similar to model an internal wall as a
wall :</p>
<p>(a) with the category 'internal' or<br>
(b) with the category 'boundary' and the boundary condition
'identical'</p>
<p>I noticed that the first option implies to consider the total
exposed surface (both sides) for the area parameter, unlike the
second one. I guess that in (a) the middle of the wall is assumed
adiabatic in order to model only a half wall but with an area 2
times higher. If this is correct, it is implicitly assumed that
the internal wall composition is symetric. By the way, I found
that the wall balance is not null otherwise.</p>
<p>Is the (a) modelling really only concern symetric composition?</p>
<p>Nonetheless, when I compare (a) with a 2*S area and (b) with a S
area, for a symetric composition, the results are not exactly the
same. I succeed having same results by setting the composition of
(a) with only the half of it (from a face to the middle).</p>
<p>So, the (a) modelling need half composition? If yes, why
non-symetric compositions causes balance divergences?<br>
</p>
<p>Regards,<br>
</p>
<br>
<div class="moz-signature">-- <br>
<b><font face="Calibri"> Loïc FRAYSSINET </font></b><font
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<br>
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