The article provides detailed guidance of how to model windcatchers and assign the same in a Hevacomp CAD model.
Windcatchers generally function as additional flowpath in an energy model; to enable a windcatcher, please open your DDB model in CAD input mode
Go for Rooms
Under the rooms section, select flowpath data and select the room you want to create a flowpath.
After opting for the suitable room, flowpath data window will open. From there, please select special flowpath data.
From the flowpath data section, click on Add Flowpath and select Roof Wind Ventilator from the flowpath category.
Select Windcatcher from the Roof wind ventilator data and provide desired parameters such as diameter, width, height etc. and click Add item from the top.
Once clicking Add item, place the special flowpath in the CAD room as below:
For more details about automatic opening vents, please refer to the wiki article here.