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atwhaley / cfast

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Mechanical vent set closing time. Then, do not work over setting time. #110

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
Mechanical vent set closing time. Then, do not work over setting time.

What is the expected output? What do you see instead?
I want raise the temperature of target from close to damper. But they don't 
work.

What version of the product are you using? On what operating system?
6.3.0.1441. Windows 8 

Please provide any additional information below.

I attached ZIP file for CFAST program file.

They are not running finish.

Stop in the middle of the program.
Why?
Check please.

Original issue reported on code.google.com by commendo...@gmail.com on 7 Jan 2014 at 1:18

Attachments:

GoogleCodeExporter commented 9 years ago 
All you cases run on our system with the exception of #14.  Still, I'm actually 
surprised they do run.  All of the compartment pressures reach more than 6000 
Pa so that the HVAC system shuts off (the default shutoff is 300 Pa) and there 
is no oxygen for the fire so that the actually heat release rate is nearly zero 
after a very short period of time.  For CFAST, this means that all the 
pyrolysis is simply adding mass to the upper layer to increase the compartment 
pressure.

Nearly all compartments leak unless actually hermetically sealed.  This may be 
through cracks in the surfaces, around doors, through wall penetrations and the 
like. The trick with most fire modeling is to set the leakage appropriate so 
that the compartment pressure is realistic, typically on the order of a few 
Pascals.

Original comment by cfastdev@gmail.com on 30 Jan 2014 at 2:59