By what i could tell so far from my own experience, the approach you're considering is correct but you also need to have a way to specify airflow between those zones. AirflowNetwork objects can do the trick to some extent (it considers both stack effect and wind induced pressure difference). This approach looses reliability if the horizontal openings are too large (i'm not sure what is considered a "large" opening though). Read both the I/O and the enginnering reference for more details. hope it helps.
On 08-01-2011 15:32, Wonjun wrote:
When it comes to simulate buoyancy flow where the well-mixed assumption can be errorneous, how can I overcome ths problem in EnergyPlus?
When I wanna know just a vertical temperature gradient of a certain zone, I can apply IRT material of EnergyPlus.
But as far as I know it can't be applied to know the airflow by the temperature stratification. right?
How about this trick?
Divide vertical zone by a number of horizontal holes.
Discharge coefficient of each hole should be 1, I think.
By doing so, can I overcome it to some degree?
Thanks in advance.
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