| 摘要 |
PROBLEM TO BE SOLVED: To provide a turbine nozzle for improving the blade efficiency by suppressing a secondary flow vortex generated by collision of a main flow at a leading edge to be low. SOLUTION: This turbine nozzle forms an annular flow passage 23 by an outer circumferential wall 21 and an inner circumferential wall 22. A raised portion 31 is formed on the inner circumferential wall 22 on a trailing edge 27 side of a back side of each nozzle blade 20 in the turbine nozzle with the nozzle blades 20 arranged in a row along the circumferential direction in the flow passage 23. COPYRIGHT: (C)2004,JPO
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