[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[EnergyPlus_Support] Re: "AFN Wind Pressure Coefficient Typ" = "Input" does't work

OK - I did that...
thx

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Jean marais" <jeannieboef@...> wrote:
>
> submit this to the help desk.
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "tobiasschulzeoooitu" <tobias.schulze@> wrote:
> >
> > Hello,
> > 
> > I have difficulties with the Airflow Network in E+ v7.2. May be there is a bug.
> > 
> > The AFN doesn't consider my defined external node height.
> > 
> > In the "AirflowNetwork:MultiZone:ExternalNode" object all nodes set at 10m and Cp values and the arrays are defined.
> > In the "AirflowNetwork:SimulationControl" oject "Wind pressure Coefficient Type" set to "Input".
> > 
> > Doesn't matter what I do the "AFN wind pressure"s calculated are always based on local height wind speed calculations (the ASHRAE power law) - not on the node height defined.
> > 
> > Design day wind speed 3 m/s
> > building terrain = country
> > AFN all nodes height = 10m
> > 
> > therfore all calculated wind pressures should be based on 3 m/s
> > if the Cp's are equal, same wind pressure independent on height of the external opening
> > 
> > But outputs show they are dependend on height.
> > 
> > Can you please check that issue?
> > Thank you and regards
> >
>




------------------------------------

Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx

The primary EnergyPlus web site is found at:
http://www.energyplus.gov

The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/

Attachments are currently allowed but be mindful that not everyone has a high speed connection.  Limit attachments to small files.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/join
    (Yahoo! ID required)

<*> To change settings via email:
    EnergyPlus_Support-digest@xxxxxxxxxxxxxxx 
    EnergyPlus_Support-fullfeatured@xxxxxxxxxxxxxxx

<*> To unsubscribe from this group, send an email to:
    EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/