3.2 Flow structures
With the frozen interface simulations at the nominal point (N =6000 rpm, m=5.06 kg/s), the relative position between the stationary and rotating components is taken into account. The calculations were started with five given relative position (Fig. 5) of an angle 4.73 deg imposed to simulate the pseudo clocking effect. The first orientation corresponds to first vane (IGV) trailing edge facing the rotor blade leading edge.