[aerospain]

Hi everyone,

I would like to define a ramp function for a 2D airfoil's pitch motion in FLUENT 12.1. I know how to do this with UDFs since I've already done it for a sinusoidal function. I just need to change the function, simplesss!

My questions are the following:

How do I stop the airfoil at a given angle of attack and leave it at that attitude? The catch is that I would like the calculation to keep running for some time at the final angle.

Can I use conditional instructions in the UDF? In that case, what would be the "flag" for the yes/no condition?

or, How could I do it by "Calculation Activities"? I'm assuming the activity I should define is the Steady or Transient mode at the time/iteration step the airfoil reaches the final angle.

Thanks in advance

cheers!