I'm currently having a problem getting the velocity inlet in my Fluent project to work as I wish. Maybe you may help.
The boundary conditions are set as shown in the figure attached (the wall section is a simple airfoil section on a tube).
I want the velocity to increase from 5m/s to 50m/s with time during the transient simulation so that the winglet is not instantly loaded with large aero loads. this way the FSI simulation is more gradual and stable.
Through a simple UDF I managed to get the velocity to increase with time but this is in turn creating a problem in static pressure (gauge) as shown in the second and third figures attached.
I tried several methods to fix it but i m ending up with the same problem all the time.
Do you have any idea how this can be fixed please?
Thanks in advance,