[EnergyPlus_Support] Re: wind pressure coefficient array values

["lisacng" <lisa.ng@xxxxxxxx>]

We created CONTAM models of 16 reference buildings (here http://www.bfrl.nist.gov/IAQanalysis/case%20studies/cwcase_12.htm) and published a report on those models and our analyses. In the CONTAM models, we assumed a building tightness and let CONTAM calculate the infiltration. We assumed one wind pressure profile (Cp as a function of wind direction) for the buildings. You could use the same procedure.

Another tool you could use is Cp Generator (http://cpgen.bouw.tno.nl/cp/). Speaking of CFD, you can also use CONTAM CFD0 editor to generate wind pressure profiles.

Lisa


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Vaibhav Jain <vaibhav.energyarchitect@...> wrote:
>
> Yes, CFD is needed to get Cp array values. If you ask E+ to calculate Cp
> for a rectangular building, then they remain constant either if you have
> many buildings/obstructions surrounding your building OR if you have an
> alone standing building. So from this, I understood that - for a complex
> geometry or when having surrounding obstructions, Cp values from CFD has to
> be brought in E+. I guess, wind tunnel should also be another option (for
> better results, but you might not want to do it).
> 
> Vaibhav Jain
> www.vaibhavjain.co
> 
> 
> 
> 
> On 12 July 2012 13:47, tom.bee57 <tom.bee57@...> wrote:
> 
> > **
> >
> >
> > Hi All,
> >
> > Forgive me if this has been covered, but I find nothing after a quick
> > search of the forum.
> >
> > I am interested how people go about getting the INPUT data for the wind
> > pressure coefficient array values.
> >
> > For a non-rectangular geomtery building, all other settings at their most
> > complicated. Do I need to solve a CFD problem to get the numbers ?
> >
> > Thanks
> >
> > Tom
> >
> >  
> >
>




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