[AlbertoPi]

Hi,
I need to apply a surface with a suction boundary condition on an airfoil. I tried using MARKER_OUTLET, but the static pressure is not enough to control the suction flow.
I'm trying MARKER_NRBC adding the flow direction. I'm using the next format:

MARKER_NRBC = ( marker, TOTAL_CONDITIONS_PT, Total Pressure, Total Temperature, Flow dir-x, Flow dir-y, Flow dir-z)

But when the solver begins, it returns:
"Warning! Invalid NRBC input!"

And if I use this other:

MARKER_NRBC = ( marker, STATIC_PRESSURE, Static Pressure, 0.0, Flow dir-x, Flow dir-y, Flow dir-z)

The solver works but diverges in few iterations.

Anyone knows if this conditions work right?

Thanks.
Alberto Pizarro