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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Dear all,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have a question about the implementation of McAdams-Ito
empirical relations for CHTC of external surfaces, in the routine:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>src/esrubld/convect2.F subroutine HTCEXT<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The implementation in the code seems to be different of the described
in Joe Clarke’s book.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoBodyText><font size=2 face=Arial><span style='font-size:10.0pt'>The
main differences are:<o:p></o:p></span></font></p>
<p class=MsoBodyText style='margin-left:36.0pt;text-indent:-18.0pt;mso-list:
l0 level1 lfo2'><![if !supportLists]><font size=2 face=Arial><span
style='font-size:10.0pt'><span style='mso-list:Ignore'>-<font size=1
face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]>There is no difference between
smooth and rough surfaces, as described in the reference.<o:p></o:p></p>
<p class=MsoBodyText style='margin-left:36.0pt;text-indent:-18.0pt;mso-list:
l0 level1 lfo2'><![if !supportLists]><font size=2 face=Arial><span
style='font-size:10.0pt'><span style='mso-list:Ignore'>-<font size=1
face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]>The formula is linear, instead of
a power law described in the reference.<o:p></o:p></p>
<p class=MsoBodyText style='margin-left:36.0pt;text-indent:-18.0pt;mso-list:
l0 level1 lfo2'><![if !supportLists]><font size=2 face=Arial><span
style='font-size:10.0pt'><span style='mso-list:Ignore'>-<font size=1
face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]>The windward face is treated in two
different ways, depending on the wind attack angle, which is not described in
the reference also. <o:p></o:p></p>
<p class=MsoBodyText style='margin-left:18.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoBodyText><font size=2 face=Arial><span style='font-size:10.0pt'>Am
I looking in the wrong place in the code?<o:p></o:p></span></font></p>
<p class=MsoBodyText><font size=2 face=Arial><span style='font-size:10.0pt'>If
not, is there any reason for those differences?<o:p></o:p></span></font></p>
<p class=MsoBodyText><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoBodyText><font size=2 face=Arial><span style='font-size:10.0pt'>Regards<o:p></o:p></span></font></p>
<p class=MsoBodyText><font size=2 face=Arial><span style='font-size:10.0pt'>Daniel
Cóstola<o:p></o:p></span></font></p>
<p class=MsoBodyText><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
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