[EnergyPlus_Support] Re: Further clarification on wind direction for COMIS SITE WIND CONDITIONS

["waspoorboy" <mingsbox@xxxxxxxxxxxxxx>]

So, the following, which is correct?
#1:EnergyPlus/COMIS doesn't use the wind direction data from 
weather/EPW file. It only uses the wind directions from the user 
input in IDF file.
#2:EnergyPlus/COMIS does use the wind direction data from weather/EPW 
file. It gets the wind direction from weather/EPW and get other 
values by interpolating between the two COMIS SITE WIND CONDITIONS.

Thanks a lot,
Ming



--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Michael J. Witte" 
<mjwitte@g...> wrote:
> Further clarification on wind direction for COMIS SITE WIND 
> CONDITIONS:
> 
> The user selects the wind directions and you are supposed to enter 
> multiple wind condition objects (see I/O ref p. 210) as needed to 
> specify different conditions on different sides of the building.  
In 
> the 3zvent example, there are two such objects:
> 
>   COMIS SITE WIND CONDITIONS,
>     0.0,  !- Wind direction {deg}
>     0.20,  !- Plan area density {dimensionless}
>     0.18,  !- Exponent of Wind velocity profile {dimensionless}
>     0.0;  !- Surrounding building height {m}
>  
>   COMIS SITE WIND CONDITIONS,
>     180.0,  !- Wind direction {deg}
>     0.20,  !- Plan area density {dimensionless}
>     0.32,  !- Exponent of Wind velocity profile {dimensionless}
>     15.0;  !- Surrounding building height {m}


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