28000 30000 32000 34000 36000 38000

Number of Iterations

Figure 2. Unsteady pressure history for reference points on the 1st vane and the 1st blade of the Purdue low speed turbine rig.

Figure 2 shows that the unsteady period wasl20 time steps for the vane and 160 time steps for the rotor. A close inspection of the values of unsteady pressure in Figure 2 show that the level of unsteadiness on the vane was only 0.1% and the level of

VBI3D Unsteady Pressure History: Purdue Low Speed Rig Baseline Case; Design Conditions

VBI3D Unsteady Pressure History: Purdue Low Speed Rig Baseline Case; Design Conditions

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