Investigation of Unsteady Aerodynamic Excitation on Rotor Blade of Variable Geometry Turbine

Table 2

Operating conditions for VGT with nominal pressure ratio.

Vane turning angle	/		Ma1		Ω
-5°	3.41	5.38×10^5	1.36	0.62	0.04	2.26	0.48
-2°	3.41	6.81×10^5	1.32	0.74	0.11	2.27	0.55
0°	3.41	7.76×10^5	1.26	0.82	0.16	2.28	0.57
+2°	3.41	8.69×10^5	1.19	0.92	0.27	2.40	0.57
+5°	3.41	1.01×10^6	1.01	1.02	0.42	2.24	0.54
+10°	3.41	1.19×10^6	0.79	1.38	0.69	1.97	0.53