Reply To: convergence issue for transonic flow

[Federico]

First, this is gauge pressure, which is relative to your operating conditions (1atm is the default), so you might not be getting the pressure ratio you expect right now.

Is your inlet supersonic? The static pressure (termed the Supersonic/Initial Gauge Pressure) must be specified if the inlet flow is supersonic or if you plan to initialize the solution based on the pressure inlet boundary conditions.