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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hello all,</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am attempting to create a forcing function for air-flow
rate in a simulation. I want to use low air-velocity with no night ventilation
over the winter months, and higher air-flow rate during the summer days and low
air flow rate during summer nights. So what I am trying to achieve is not a
start and stop </span></font><font size=2 face=Arial><span style='font-size:
10.0pt;font-family:Arial'>(ON, OFF)</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'> situation for the whole cycle. For
example:</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> 0-2160 hrs </span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>(winter)</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal style='text-indent:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>07:00</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> -</span></font><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>18:00</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> </span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>(200 m³/hr)</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> Day
ventilation </span></font><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>(ON, OFF)</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>18:00</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> -</span></font><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>07:00</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> </span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>(0 m³/hr)</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> Night
ventilation</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>2161-6552hrs </span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>(Summer)</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>;</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>07:00-18:00</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> </span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>(1000 m³/hr)</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> </span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>(ON
continuously at different air flow rate)</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>18:00-07:00</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> </span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>(200 m³/hr)</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>6552 – 8760hrs</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal style='text-indent:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'> </span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>07:00</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> -</span></font><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>18:00</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> </span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>(200 m³/hr)</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> Day
ventilation </span></font><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>(ON, OFF)</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>18:00</span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> -</span></font><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>07:00</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> </span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>(0 m³/hr)</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> Night
ventilation</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Any suggestions on how best to schedule such forcing
function? </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=3 color=blue face="Times New Roman"><span
style='font-size:12.0pt;color:blue'>Abdullahi Ahmed </span></font><font size=1
color=blue><span style='font-size:8.0pt;color:blue'>(BSc. MSc.)</span></font><font
size=1 color=blue><span style='font-size:8.0pt;color:blue'> Postgraduate
researcher</span></font></p>
<p class=MsoNormal><font size=2 color=blue face="Times New Roman"><span
lang=EN-US style='font-size:10.0pt;color:blue'>School of the Environment</span></font></p>
<p class=MsoNormal><font size=2 color=blue face="Times New Roman"><span
lang=EN-US style='font-size:10.0pt;color:blue'>University</span></font><font
size=2 color=blue><span lang=EN-US style='font-size:10.0pt;color:blue'> of </span></font><font
size=2 color=blue><span lang=EN-US style='font-size:10.0pt;color:blue'>Brighton</span></font></p>
<p class=MsoNormal><font size=2 color=blue face="Times New Roman"><span
lang=EN-US style='font-size:10.0pt;color:blue'>Cockcroft</span></font><font
size=2 color=blue><span lang=EN-US style='font-size:10.0pt;color:blue'> </span></font><font
size=2 color=blue><span lang=EN-US style='font-size:10.0pt;color:blue'>Building</span></font></p>
<p class=MsoNormal><font size=2 color=blue face="Times New Roman"><span
lang=EN-US style='font-size:10.0pt;color:blue'>Lewes Rd.</span></font></p>
<p class=MsoNormal><font size=2 color=blue face="Times New Roman"><span
lang=EN-US style='font-size:10.0pt;color:blue'>Brighton</span></font></p>
<p class=MsoNormal><font size=2 color=blue face="Times New Roman"><span
lang=EN-US style='font-size:10.0pt;color:blue'>BN2 4GJ</span></font></p>
<p class=MsoNormal><font size=2 color=blue face="Times New Roman"><span
lang=EN-US style='font-size:10.0pt;color:blue'> </span></font></p>
<p class=MsoNormal><font size=2 color=blue face="Times New Roman"><span
lang=EN-US style='font-size:10.0pt;color:blue'>Tel: +44 01273 643455</span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
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