Research Article

Influences of Tip Cooling Injection on Tip Clearance Control at Design and Off-Design Incidences

Table 1

Cascade geometric parameters.

Blade span H/mm120
Blade chord C/mm77
Blade axial chord Cax/mm60
Blade pitch s/mm55
Tip clearance t/mm2
Turning angle/deg119
Zweifel number1.01
Inlet flow angle/deg52.4
Outlet flow angle/deg 66.6
Injection mass flow/passage mass flow1%
Injection plenum pressure/KPa230