Effect of the Radial Pressure Gradient on the Secondary Flow Generated in an Annular Turbine Cascade

Table 1

Cascade parameters.

	Root	tip
Chord length, C [mm]	107	102
Axial chord, 𝐶𝑥 [mm]	105	78
Inlet angle, 𝛽1[°]	39
Exit angle, 𝛽2[°]	26
Blade span, h [mm]	210
Blade spacing (pitch), S [mm]	66.45	80.8
Aspect ratio, h/C [—]	1.96	2.06
Inner diameter, 𝐷𝐻 [mm]	1946
Outer diameter, 𝐷𝑇 [mm]	2366
Number of blades, N [—]	92