[TRNSYS-users] Help with TRNSFLOW

[Arie Kalkman]

Dear Juan,

With the defined network, you can calculate the flow in either of two cases:
-	external pressure; induced by wind. For this calculation you need
cimatic data including wind speed, and you need to define pressure-
coefficients at each external surface
-	due to thermal buoyancy; in order to get a (small) flow the cracks
should be at different heights to induce a thermal stack. 

In order to get a flow large enough to ‘cool’ the hot zone you probably need
a ‘large opening’ instead of a crack.

	(Furthermore: don’t forget to use Type56TRNFLOW instead of the
standard Type56, and don’t forget to switch the input ‘TRNFLOW’ to 1.)
	
	
	regards, Arie




-----Oorspronkelijk bericht-----
Van: trnsys-users-bounces at engr.wisc.edu
[mailto:trnsys-users-bounces at engr.wisc.edu] Namens juan.jesus at faimevi.eu
Verzonden: dinsdag 6 maart 2007 23:32
Aan: trnsys-users at engr.wisc.edu
Onderwerp: [TRNSYS-users] Help with TRNSFLOW

Hello, I am  Juan jesús and write to you from Spain.

I need help with TRNSFLOW. To begin, for some reason the example that  
has the program has some mistake and I would like that you were  
sending yours this one and if you can someone more in order that I was  
helping myself.


I have started creating a simple example, after reading the manuals,  
but I have problems to do a coherent net.

Only I want to take advantage of the air of the face North of a  
building to cool that of the face South.

The net that I have created consists in:

External Node + Crack + Thermal zone A + Crack + Thermal zone B +  
Crack + External Node....


In a beginning what I do is to simulate without defining the air net  
and seeing the values of the temperatures in the zones. And later I  
realize this net of air flow and observe that there are no variations.  
That I am doing badly?. Thank you very much


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