[TRNSYS-users] TRNSYS input file (***.air)

David BRADLEY d.bradley at tess-inc.com
Wed Oct 15 07:00:42 PDT 2014


Remon,
  The second number is the flow coefficient and the third number is the 
flow exponent in the equation that relates the flow through the opening 
to the pressure difference across the opening. I am not sure what the 
first value is or how it is computed.
Kind regards,
  David



On 10/15/2014 01:06, Remon Lapisa wrote:
> Hi everyone,
>
> In the TRNSYS input file of Contam (***.air) we will find some 'flow 
> elements' datas, consisting of 3 values numbers on each line, like the 
> example below (for 5 flow elements):
>
> ....
> -999 wind pressure profiles:
> 1 2 5
>  0 -1 -0.00625 6.94444e-005 0
>  90 -1 0.00625 6.94444e-005 -5.14403e-007
>  180 -0.25 0.00625 -6.94444e-005 0
>  270 -0.25 -0.00625 -6.94444e-005 5.14403e-007
>  360 -1 0 0 0
> ...etc
> -999 flow elements:
> 1 0.0321663 0.94 0.5
> 2 0.090255 1.87 0.5
> 3 0.25528 3.74 0.5
> 4 0.723488 7.49 0.5
> 5 0.0176262 1.08102 0.5
> .... etc
>
>
> In the example above, what values are represented by the 3 bold 
> numbers (0.0176262, 1.08102,  0.5) ??
>
> How to calculate the value of 0.0176262 ?
>
> Thank for the help
>
> remon
>
>
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

P:+1.608.274.2577
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d.bradley at tess-inc.com

http://www.tess-inc.com
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