Re: [EnergyPlus_Support] Re: Wind speed (power law + profiles)

["Michael J. Witte" <mjwitte@xxxxxxxx>]

COMIS does not use the same wind speed model that is used for convection 
coefficients.  See See COMIS Simulation and COMIS Site Wind Conditions in the 
Input Output Reference.

Mike


On 25 Mar 2006 at 11:51, sebastian.coene wrote:

> hi,
> 
> Thanks for the help!
> I calculated the wind pressure on my windows. I have a 15m high
> building with 2 windows on at 12m the other at 3m (in opposite walls).
> For the building at 12m the calculation in the engeneering reference
> are correct. But if i use them for the window at 3m height, is get BIG
> differences.
> The odd thing is that if i use the refence speeds given by EnergyPlus
> (so i guess out of the weather file?) the calculation is correct?
> Does anyone have a explenation for that??
> 
> greetings,
> Sebastian
> 
> 
> 
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Ellis, Peter"
> <peter_ellis@...> wrote:
> >
> >  
> > See the section in the Engineering Reference called "Local Wind
> Speed Calculation"--it is under the heading Outside Surface Heat
> Balance - External Convection (document page 37; PDF page 68).  The
> terrain type is set by the Terrain field of the BUILDING object.  
> >  
> > The next release (version 1.3) has significant improvements that
> allow you to specify the actual wind profile power-law coefficients
> both at the building site and at the weather station.  
> > 
> > P
> >  
> >  
> 
> 
> 
> 
> 
> 
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> 
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> 
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> 
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>  
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> 
> 
> 
>  
> 
> 
> 
> 


========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
EnergyPlus-Support@xxxxxxxx





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