| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a turbine assembly with end-wall-contoured airfoils and preferential clocking. <P>SOLUTION: A turbine apparatus includes: a first nozzle including an array of first vanes each having a concave pressure side, a convex suction side, and leading and trailing edges; a rotor including a plurality of blades carried by a rotatable disk and existing on the downstream side from the first nozzle; and a second nozzle including an array of second vanes each having a concave pressure side, a convex suction side, and the leading and trailing edges and arranged on the downstream side from the rotor. The first and second vanes of the first and second nozzles are circumferentially clocked relative to each other, and in a predetermined operating condition, wakes discharged from the first vanes are aligned in a circumferential direction with the leading edges of the second vanes, and a stacking axis of the first vane is a nonlinear. An inner band of the first nozzle is contoured in a non-axisymmetric shape. <P>COPYRIGHT: (C)2012,JPO&INPIT |
