Improvement of Moderately Loaded Transonic Axial Compressor Performance Using Low Porosity Bend Skewed Casing Treatment

Figure 14

Comparative variations of inlet axial velocity for the solid casing and CT3-NP configuration at 60% operating speed at stall flow (SF) condition for 20% and 40% axial coverage.

(a) Inlet axial velocity in the tip region ahead of the rotor leading edge for the solid casing and CT3-NP configuration

(b) FFT showing the stall frequency for the solid casing and CT3-NP configurations