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[FAQ]

For models where no pressure boundary is being used, but it’s desired to set a pressure level at some location, the following procedure can be used:
1) Set the Reference Pressure on the domain Basic Settings tab
2) Under Solver Control, under the Advanced Options tab, check the “Pressure Level Information” box. Change the option from Automatic to Cartesian Coordinates and enter the coordinates of the location where the pressure level is to be set. Check the box “Relative Pressure Level”, and enter the desired pressure. The value should be set such that the Relative Pressure plus Reference Pressure is equal to the absolute static pressure.