Fig. 1 Illustration of TUDa-GLR-OpenStage test rig More about this image found in Illustration of TUDa-GLR-OpenStage test rig

Fig. 2 Illustration of grid topology, flow domain, and boundary conditions of TUDa-GLR-OpenStage with a full-scale cavity seal More about this image found in Illustration of grid topology, flow domain, and boundary conditions of TUDa...

Fig. 3 Validation of the full-scale model on predicting the overall performance of the TUDa-GLR-OpenStage with stator cavity More about this image found in Validation of the full-scale model on predicting the overall performance of...

Fig. 4 Validation of the full-scale model on predicting the 2D distribution of the normalized difference in total pressure Δ π * at the design speed More about this image found in Validation of the full-scale model on predicting the 2D distribution of the...

Fig. 5 Illustration of grid topology, flow domain, and boundary conditions of TUDa-GLR-OpenStage with a simplified cavity model More about this image found in Illustration of grid topology, flow domain, and boundary conditions of TUDa...

Fig. 6 Contours of radial velocity, tangential velocity, and leakage swirl angle at a constant radius cut near plane D at the N100, NS condition More about this image found in Contours of radial velocity, tangential velocity, and leakage swirl angle a...

Fig. 7 Validation of the simplified model on predicting the stage exit (ME30) radial profiles of flow angle and total pressure ratio at the design speed More about this image found in Validation of the simplified model on predicting the stage exit (ME30) radi...

Fig. 8 Stage exit (ME30) 2D distribution of total pressure ratio at N100, NS condition More about this image found in Stage exit (ME30) 2D distribution of total pressure ratio at N100, NS condi...

Fig. 9 Leakage flow ratio and leakage swirl angle under different incidences of the two operating speeds More about this image found in Leakage flow ratio and leakage swirl angle under different incidences of th...

Fig. 10 Summary of overall compressor performance in variation with leakage flow ratio and leakage swirl angle at the design speed: ( a ) PE condition and ( b ) NS condition More about this image found in Summary of overall compressor performance in variation with leakage flow ra...

Fig. 11 Isentropic efficiency penalty with different leakage flow ratios More about this image found in Isentropic efficiency penalty with different leakage flow ratios

Fig. 12 Swirl-induced change in isentropic efficiency with different leakage flow ratios More about this image found in Swirl-induced change in isentropic efficiency with different leakage flow r...

Fig. 13 Stator-inlet radial profiles of the incoming flow angle More about this image found in Stator-inlet radial profiles of the incoming flow angle

Fig. 14 Stage exit (ME30) radial profiles of total pressure ratio using different leakage flow ratios More about this image found in Stage exit (ME30) radial profiles of total pressure ratio using different l...

Fig. 15 Stage exit (ME30) 2D distribution: total pressure ratio of the nominal case (top row); normalized total pressure ratio difference between the α = 0 deg and m L / m =1.5% leakage case and the nominal case (bottom row) More about this image found in Stage exit (ME30) 2D distribution: total pressure ratio of the nominal case...

Fig. 16 Limiting streamline and static pressure distribution on the hub and blade surfaces at the N100, NS condition (➀: hub corner separation; ➁: hub LE separation; ➂: near-hub TE separation; and ➃: near-shroud TE separation) More about this image found in Limiting streamline and static pressure distribution on the hub and blade s...

Fig. 17 3D blockage volume in the stator passage at the N100, NS condition More about this image found in 3D blockage volume in the stator passage at the N100, NS condition

Fig. 18 Stage exit (ME30) radial profiles of total pressure ratio using different leakage swirl angles under different operation conditions More about this image found in Stage exit (ME30) radial profiles of total pressure ratio using different l...

Fig. 19 Stage exit (ME30) 2D distribution: total pressure ratio of the α = 0 deg leakage case (top row); normalized total pressure ratio difference between the α = + 40 deg and α = − 40 deg leakage cases (bottom row) More about this image found in Stage exit (ME30) 2D distribution: total pressure ratio of the α = 0 ...