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### Questions for Airflow Network and Roomair:node: airflowNetwork

Hello! I'm modelling a large atrium with natural ventilation to test the cooling effects of the natural ventilation. For this atrium, to prevent the smoke spreading in fire, it sets a floor in the middle and connects upper part with lower part by a large horizontal opening. As shown in the picture.

For this problem, as the I/O reference mentioned, it cannot use the airflow network, because it cannot calculate the temperature stratification. So, it needs to use a Roomair:node: airflowNetwork. However,there is a confusion. It can defines a AirflowNetwork:intrazone: linkage by using a crack to simulate the horizontal opening.

But does it mean that it cannot take the impacts of the floor in the simulation? Because if it uses the Roomairnode model, it assumes the atrium including upper part and lower part in one thermal zone. How can Energyplus tackle with this situation.

### Questions for Airflow Network and Roomair:node: airflowNetwork

Hello! I'm modelling a large atrium with natural ventilation to test the cooling effects of the natural ventilation. For this atrium, to prevent the smoke spreading in fire, it sets a floor in the middle and connects upper part with lower part by a some large horizontal opening. openings. As shown in the picture.

For this problem, as the I/O reference mentioned, it cannot use the airflow network, because it cannot calculate the temperature stratification. So, it needs to use a Roomair:node: airflowNetwork. However,there is a confusion. It can defines a AirflowNetwork:intrazone: linkage by using a crack to simulate the horizontal opening.

How can I define this space? If I define this atrium as a single zone and use Roomair:node to simulate temperature stratification, it will ignore the effects of floor slab in middle. But does If I define it mean that as two zones, as mentioned in the reference, it cannot take the impacts of the floor in the simulation? Because if it uses the Roomairnode model, it assumes the atrium including upper part and lower part in one thermal zone. How can Energyplus tackle with this situation. calculate buoyant effects between these two zones correctly. Any suggestions are very helpful.

### Questions for Airflow Network and Roomair:node: airflowNetwork

Hello! I'm modelling a large atrium with natural ventilation to test the cooling effects of the natural ventilation. For this atrium, to prevent the smoke spreading in fire, it sets a floor in the middle and connects upper part with lower part by some large horizontal openings. As shown in the picture.

For this problem, as the I/O reference mentioned, it cannot use the airflow network, because it cannot calculate the temperature stratification. So, it needs to use a Roomair:node: airflowNetwork. However,there is a confusion.

How can I define this space? If I define this atrium as a single zone and use Roomair:node to simulate temperature stratification, it will ignore the effects of floor slab in middle. But If I define it as two zones, as mentioned in the reference, it cannot calculate buoyant effects between these two zones correctly. Any suggestions are very helpful.