Fig.1

Single-stage compressor configuration

Fig.2

Schematic diagram of S1 actuation system

Fig.3

Path of state of compressor after surge exit

Fig.4

Variation of S1 needle during surge exit

Fig.5

Variation of characteristic parameters vs time after surge exit

Fig.6

Aerodynamic forces and corresponding moments under VSV coordinate system

Table 1

Mesh and computation setting parameters

Fig.7

Computation domain and mesh of single-stage compressor

Fig.8

Comparison of test and computational performances at design rotational speed

Table 2

Comparison of test and computational data

Fig.9

Static pressure distribution on airfoil in middle section of vane at choke point

Fig.10

Forces and moments on airfoil in middle section of vane at choke point

Fig.11

Static pressure distribution on airfoil in middle section of vane at peak efficiency point

Fig.12

Forces and moments on airfoil in middle section of vane at peak efficiency point

Fig.13

Static pressure distribution on airfoil in middle section of vane at near surge point

Fig.14

Forces and moments on airfoil in middle section of vane at near surge point

Fig.15

Aerodynamic moment distribution on performance map of compressor

Fig.16

Static pressure contours under different outlet pressure conditions

Fig.17

Static pressure distributions along airfoil in middle section under choke conditions

Table 3

Comparison of blade numbers

Fig.18

Comparison of steady and unsteady computational performance

Fig.19

Variation of characteristic parameters vs time in unsteady computation

Fig.20

Static pressure contours in middle section and pressure distributions along airfoil in unsteady computation

Fig.21

Moments produced by actuators and aerodynamic moments from computations

Fig.22

Configuration of VSV just in front of bypass